CN116240891A

CN116240891A - Construction method of auxiliary supporting system of pile-side extrusion friction type operation platform

Info

Publication number: CN116240891A
Application number: CN202310311236.6A
Authority: CN
Inventors: 史晓涛; 戴鹏程; 朱奇; 庞号充; 卫春安; 李伟; 顾永根
Original assignee: Anhui Ecological Environment Technology Development Co ltd; Anhui Province Transportation Harbor Engineering Co ltd
Current assignee: Anhui Ecological Environment Technology Development Co ltd; Anhui Province Transportation Harbor Engineering Co ltd
Priority date: 2023-03-28
Filing date: 2023-03-28
Publication date: 2023-06-09

Abstract

The invention discloses a construction method of an auxiliary supporting system of a side pile extrusion friction type operation platform, which realizes the construction of a side hoop supporting system on a prestressed concrete pipe pile by a supporting hoop device consisting of two circular arc stirrups and a plurality of overhanging supporting steel bars arranged on the circular arc stirrups; the inner platform and the outer platform are arranged on the hoop supporting system and are connected in series through the compression screw, and the compression end arranged at the front end of the compression screw and the outer wall of the prestressed concrete pipe pile are used for realizing extrusion, so that the friction type inner and outer platforms are constructed. The method is simple, convenient and quick to operate, high in efficiency, low in requirement on the ground operation environment near the tubular pile, simple and compact in structure, high in stability, high in supporting strength, easy to adjust, good in overall stability and free of damage to the tubular pile, and the constructed auxiliary supporting system of the friction type operation platform for extruding the tubular pile is formed.

Description

Construction method of auxiliary supporting system of pile-side extrusion friction type operation platform

Technical Field

The invention relates to the technical field of building tools, in particular to a method for constructing an auxiliary supporting system of a pile-side extrusion friction type operation platform.

Background

The prestressed concrete pipe pile is a hollow cylinder type concrete prefabricated part manufactured by adopting a pretensioning prestressing centrifugal forming process and performing high-pressure high-temperature steam curing, and the standard section length is 10m. The prestressed concrete pipe pile has the advantages of high single pile bearing capacity, good bending resistance and pulling resistance and low manufacturing cost, and is widely applied to the technical fields of industrial and civil high-rise buildings, railways, highways, bridges, ports, wharfs, water conservancy projects, municipal engineering and other engineering buildings.

For pile splicing operation of prestressed concrete piles, an operation platform must be constructed before the operation, and then pile splicing operation of pile splicing is performed by using the operation platform. At present, for the construction of tubular pile operation platform and auxiliary support system thereof, the defects of complex system structure, poor stability, difficult adjustment of height, easy damage to tubular pile and the like generally exist, and the problems of complicated construction procedure, low efficiency and inconvenient operation exist at the same time. For example, by constructing a scaffold platform independent of the pipe pile in the vicinity of the pipe pile, although stability is high, construction is complicated, construction or disassembly speed is slow, efficiency of pile extension is greatly affected, practicability is not high, and a ground environment in the vicinity of the pipe pile is complicated, so that construction of the scaffold is generally not facilitated. In addition, for example, directly build platform supporting system through welding or drilling operation on the tubular pile, although build the speed very fast, but welding or drilling's operation platform, the height is difficult for adjusting, and the used repeatedly of inconvenient platform also easily forms the destruction to the outer wall of tubular pile to influence the intensity and the life of tubular pile.

Disclosure of Invention

The invention aims at: a construction method of an auxiliary supporting system of a pile-side extrusion friction type operation platform is provided, so that the defects are overcome.

In order to achieve the above object, the present invention provides the following technical solutions:

a construction method of a pile-side extrusion friction type operation platform auxiliary support system comprises the following steps:

s1, building a hoop supporting system:

s11, according to the requirement, at a certain height position of the prestressed concrete pipe pile, two arc stirrups in the supporting hoop device are oppositely transversely arranged and clamped on the outer wall of the prestressed concrete pipe pile, and the two arc stirrups are tightly regulated and fixed through a fastening bolt;

s12, respectively inserting and fixing the front ends of a plurality of overhanging support steel bars into a plurality of anchor ear embedded nuts arranged on the outer end face of the circular arc-shaped stirrup ring one by one, and realizing the fixation of the overhanging support steel bars and the anchor ear embedded nuts by utilizing the matching of the external threads arranged at the front ends of the overhanging support steel bars and the internal threads of the anchor ear embedded nuts, thereby realizing the establishment of an anchor ear support system beside the prestressed concrete pipe pile;

s2, constructing friction type inner and outer platforms:

s21, sleeving a prefabricated platy inner platform with a pile hole in the center on the prestressed concrete pipe pile from the top end of the prestressed concrete pipe pile, and enabling the inner platform to be clung to a plurality of overhanging supporting steel bars;

s22, sleeving a prefabricated platy outer platform with an outer platform central hole in the center on the outer side of the inner platform, and attaching the hole wall of the outer platform central hole of the outer platform to the outer peripheral wall of the inner platform;

s23, sequentially screwing a plurality of compression screws into a plurality of compression nut holes preset on the end surfaces of the outer platform and the inner platform one by one in a threaded engagement mode;

s24, when the front ends of the compacting screws are exposed out of the pile holes, the prefabricated compacting ends are arranged at the front ends of the compacting screws one by one, and then the compacting screws are screwed in continuously, so that the compacting ends at the front ends of the compacting screws are extruded on the outer wall of the prestressed concrete pipe pile, and the friction type inner and outer platforms are constructed; the whole process of constructing the auxiliary supporting system of the friction type operation platform for the pile-attaching extrusion is completed.

Preferably, the anchor ear embedded nuts and the overhanging support steel bars are all arranged in the same horizontal plane.

Preferably, the inner platform and the outer platform are positioned on the same plane, and the plurality of compression nut holes are uniformly distributed in a radioactive form by taking the center of the pile hole as a center point.

Preferably, the supporting hoop device and the inner platform are both arranged on the outer wall of the prestressed concrete pipe pile, and the prestressed concrete pipe pile is positioned at the center of a pile hole in the center of the inner platform and a center hole formed by the two circular arc stirrups.

Preferably, a compression internal thread is arranged in the compression nut hole, a compression external thread which is matched with the compression internal thread is arranged on the compression screw, and the compression screw is arranged in the compression nut hole in a threaded engagement mode.

Preferably, in the step S, the compacting end is composed of a steel member at a rear end and a rubber member at a front end, and the rubber member is pressed against the outer wall of the prestressed concrete pipe pile.

Preferably, in the step S, the inner platform and the outer platform are all integrally formed or are plate-type platforms which are formed by fixing and splicing a plurality of components through bolts and are of a round or square metal structure or a plastic structure.

Preferably, one ends of the two arc stirrups are fixed together through hinging, and the other ends of the arc stirrups are fixed through fastening bolts; or two ends of the two circular arc stirrups are fixed through fastening bolts.

The invention has the beneficial effects that:

the invention relates to a construction method of an auxiliary support system of a pile-side extrusion friction type operation platform, which realizes the construction of a hoop support system by side on a prestressed concrete pipe pile through a support hoop device consisting of two circular arc stirrups and a plurality of overhanging support steel bars arranged on the circular arc stirrups; the inner platform and the outer platform are arranged on the hoop supporting system and are connected in series through the compression screw, and the compression end arranged at the front end of the compression screw and the outer wall of the prestressed concrete pipe pile are used for realizing extrusion, so that the friction type inner and outer platforms are constructed. The method has the advantages of simple program, convenient and quick operation, high efficiency and low requirement on the ground operation environment near the tubular pile. The auxiliary supporting system for the pile-side extrusion friction type operating platform constructed by the invention has the advantages of simple and compact structure, high stability, high supporting strength, easy height adjustment and good overall stability, does not damage the tubular pile, and can greatly improve the operation efficiency of the tubular pile in the later stage.

Drawings

Fig. 1: a flow diagram of the method of the invention;

fig. 2: the auxiliary supporting system of the pile-side extrusion friction type operating platform is structurally schematic;

fig. 3: the invention discloses a structural schematic diagram of a supporting hoop device of an auxiliary supporting system of a pile-side extrusion friction type operating platform.

Detailed Description

The following description of embodiments of the present invention is provided with reference to fig. 1 to 3:

as shown in fig. 2 and 3, an auxiliary supporting system for a friction type operation platform for extruding piles comprises a supporting hoop device 1 and an inner platform 2, wherein the supporting hoop device 1 and the inner platform 2 are arranged on the outer wall of a prestressed concrete pipe pile 100, and the inner platform 2 is arranged on the supporting hoop device 1.

The support hoop device 1 is formed by oppositely and transversely arranging two circular arc stirrups 11 and fixing the two circular arc stirrups through fastening bolts 12, wherein one ends of the two circular arc stirrups 11 are fixed together through hinging, and the other ends of the two circular arc stirrups are fixed through the fastening bolts 12; or both ends of the two circular arc stirrups 11 are fixed by fastening bolts 12. The prestressed concrete pipe pile 100 is disposed in a pile hole 21 formed in the center of the inner deck 2 and in a center hole formed by the two circular arc stirrups 11. By adjusting the tightness of the fastening bolts 12, the tightness of the outer walls of the support hoop device 1 and the prestressed concrete pipe pile 100 can be adjusted.

The circular arc stirrup 11 is provided with a plurality of anchor ear embedded nuts 12 and overhanging support steel bars 14 on the annular outer end face. Wherein, the embedded nut 12 of a plurality of staple bolt, the support bar 14 that encorbelments all set up in same horizontal plane. The front end of the cantilever support steel bar 14 is provided with external threads matched with the internal threads of the anchor ear embedded nuts 12, a plurality of cantilever support steel bars 14 are in one-to-one correspondence with a plurality of anchor ear embedded nuts 12, the front ends of the cantilever support steel bars 14 are inserted and screwed into the anchor ear embedded nuts 12, and a plurality of cantilever support steel bars 14 are arranged radially.

The inner platform 2 is arranged on a plurality of overhanging supporting steel bars 14, and a pile hole 21 arranged in the center of the inner platform 2 is overlapped with a central hole formed by two circular arc stirrups 11. The inner platform 2 is pressed against a plurality of overhanging supporting steel bars 14 by the gravity of the inner platform

The outer side of the inner platform 2 is provided with an outer platform 3, the end faces of the inner platform 2 and the outer platform 3 are provided with a plurality of compression nut holes 22, the inner platform 2 and the outer platform 3 are positioned on the same plane, and the plurality of compression nut holes 22 are uniformly distributed in a radioactive form and are arranged by taking the center of the pile hole 21 as a center point.

Wherein, the compressing device 4 is arranged in the compressing nut hole 22. The compressing device 4 comprises a compressing screw 41 and a compressing end head 42, a compressing internal thread is arranged in the compressing nut hole 22, a compressing external thread which is matched with the compressing internal thread is arranged on the compressing screw 41, the compressing screw 41 is arranged in the compressing nut hole 22 in a threaded engagement mode, and the compressing end head 42 is suspended in the pile hole 21 in the center of the inner platform 2 and is fixed at the front end of the compressing screw 41. The compression end 42 is composed of a steel member at the rear end and a rubber member at the front end, which is pressed against the outer wall of the prestressed concrete pipe pile 100. By means of rotation adjustment of the compression screw 41, the rubber component of the compression end 42 at the front end of the compression screw 41 can be extruded on the outer wall of the prestressed concrete pipe pile 100, and the compression screw 41 can be continuously screwed in, so that the extrusion force between the compression device 4 and the outer wall of the prestressed concrete pipe pile 100 can be adjusted. The anchor ear supporting device 1 fixed by the anchor ear embedded nuts 12, the compression device 4 arranged on the inner platform 2 and the outer platform 3 form the side pile extrusion with the prestressed concrete pipe pile 100, the stability of the auxiliary support of the platform is realized by utilizing the friction force generated by the extrusion,

wherein, the inner platform 2 and the outer platform 3 are all integrally formed or are plate-type platforms which are formed by fixing and splicing a plurality of parts through bolts and are of round or square metal structures or plastic structures as a whole. An outer platform center hole is formed in the center of the outer platform 3, and the hole wall of the outer platform center hole of the outer platform 3 is attached to the outer peripheral wall of the inner platform 2.

As shown in fig. 1, 2 and 3, the construction method of the auxiliary supporting system of the pile-attaching extrusion friction type operation platform provided by the invention specifically comprises the following steps:

s1, building a hoop supporting system:

s11, according to the requirement, two arc stirrups 11 in the support hoop device 1 are transversely arranged relatively and clamped on the outer wall of the prestressed concrete pipe pile 100 at a certain height position of the prestressed concrete pipe pile 100, and the two arc stirrups 11 are tightly regulated and fixed through a fastening bolt 12;

s12, the front ends of a plurality of cantilever support steel bars 14 are respectively inserted and fixed into a plurality of anchor ear embedded nuts 12 arranged on the annular outer end face of the circular arc stirrup 11 one by one, the outer threads arranged at the front ends of the cantilever support steel bars 14 are matched with the inner threads of the anchor ear embedded nuts 12 to realize the fixation of the cantilever support steel bars 14 and the anchor ear embedded nuts 12, and then the establishment of an anchor ear support system beside the prestressed concrete pipe pile 100 is realized;

s2, constructing friction type inner and outer platforms:

s21, sleeving a prefabricated platy inner platform 2 with a pile hole 21 in the center on the prestressed concrete pipe pile 100 from the top end of the prestressed concrete pipe pile 100, and enabling the inner platform 2 to be tightly attached to a plurality of overhanging support steel bars 14;

s22, sleeving a prefabricated platy outer platform 3 with an outer platform central hole in the center outside the inner platform 2, and attaching the hole wall of the outer platform central hole of the outer platform 3 to the outer peripheral wall of the inner platform 2;

s23, a plurality of compression screws 41 are screwed into a plurality of compression nut holes 22 preset on the end surfaces of the outer platform 3 and the inner platform 2 one by one in sequence in a threaded engagement mode;

s24, when the front ends of the compacting screws 41 are exposed to the pile holes 21, the prefabricated compacting ends 42 are arranged at the front ends of the compacting screws 41 one by one, and then the compacting screws 41 are screwed in continuously, so that the compacting ends 42 at the front ends of the compacting screws 41 are extruded on the outer wall of the prestressed concrete pipe pile 100, and the friction type inner platform and the friction type outer platform are constructed; the whole process of constructing the auxiliary supporting system of the friction type operation platform for the pile-attaching extrusion is completed.

The invention relates to a construction method of an auxiliary supporting system of a pile-side extrusion friction type operation platform, which realizes the establishment of a hoop supporting system on a prestressed concrete pipe pile 100 by a supporting hoop device 1 consisting of two circular arc stirrups 11 and a plurality of overhanging supporting steel bars 14 arranged on the circular arc stirrups 11; the inner platform 2 and the outer platform 3 are arranged on the hoop supporting system, the inner platform 2 and the outer platform 3 are connected in series through the compression screw 41, and the compression end 42 arranged at the front end of the compression screw 41 and the outer wall of the prestressed concrete pipe pile 100 are used for realizing extrusion, so that the friction type inner and outer platforms are constructed.

The construction method of the auxiliary supporting system of the pile-side extrusion friction type operation platform has the advantages of simple procedure, convenient and quick operation, high efficiency and low requirement on the ground operation environment near the tubular pile. The auxiliary supporting system for the pile-side extrusion friction type operating platform constructed by the invention has the advantages of simple and compact structure, high stability, high supporting strength, easy height adjustment and good overall stability, does not damage the tubular pile, and can greatly improve the operation efficiency of the tubular pile in the later stage.

While the invention has been described above with reference to the accompanying drawings, it will be apparent that the invention is not limited to the above embodiments, but is also within the scope of the invention if the inventive concept and technical scheme is not substantially modified or applied directly to other occasions without modification.

Claims

1. The construction method of the auxiliary supporting system of the pile-side extrusion friction type operating platform is characterized by comprising the following steps of:

s1, building a hoop supporting system:

s11, according to the requirement, two arc stirrups (11) in the support hoop device (1) are transversely arranged and clamped on the outer wall of the prestressed concrete pipe pile (100) at a certain height position of the prestressed concrete pipe pile (100), and the two arc stirrups (11) are tightly regulated and fixed through fastening bolts (12);

s12, inserting and fixing the front ends of a plurality of overhanging support steel bars (14) into a plurality of anchor ear embedded nuts (12) arranged on the annular outer end face of the circular arc-shaped stirrups (11) one by one, and realizing the fixation of the overhanging support steel bars (14) and the anchor ear embedded nuts (12) by utilizing the fact that external threads arranged at the front ends of the overhanging support steel bars (14) are identical with internal threads of the anchor ear embedded nuts (12), so as to realize the establishment of an anchor ear support system beside on the prestressed concrete pipe pile (100);

s2, constructing friction type inner and outer platforms:

s21, sleeving a prefabricated platy inner platform (2) with a pile hole (21) in the center on the prestressed concrete pipe pile (100) from the top end of the prestressed concrete pipe pile (100), and enabling the inner platform (2) to be tightly attached to a plurality of overhanging support steel bars (14);

s22, sleeving a prefabricated platy outer platform (3) with an outer platform central hole in the center outside the inner platform (2), and attaching the hole wall of the outer platform central hole of the outer platform (3) to the outer peripheral wall of the inner platform (2);

s23, screwing a plurality of compression screws (41) into a plurality of compression nut holes (22) preset on the end surfaces of the outer platform (3) and the inner platform (2) one by one in sequence in a threaded engagement mode;

s24, when the front end of the screw (41) to be compressed is exposed into the pile hole (21), the prefabricated compressing ends (42) are arranged at the front end of the screw (41) one by one, and then the screw (41) is continuously screwed in, so that the compressing ends (42) at the front end of the screw (41) are extruded on the outer wall of the prestressed concrete pipe pile (100), and the friction type inner and outer platform is constructed; the whole process of constructing the auxiliary supporting system of the friction type operation platform for the pile-attaching extrusion is completed.

2. The method for constructing the auxiliary supporting system of the friction type operation platform for the pile-forming extrusion of the invention as set forth in claim 1, wherein in step S1, the plurality of anchor ear embedded nuts (12) and the cantilever supporting steel bars (14) are all disposed in the same horizontal plane.

3. The method for constructing the auxiliary supporting system of the friction type operation platform for the pile-forming extrusion according to claim 1, wherein in the step S2, the inner platform (2) and the outer platform (3) are positioned on the same plane, and the plurality of compression nut holes (22) are uniformly distributed in a radioactive form by taking the center of the pile hole (21) as a center point.

4. The construction method of the auxiliary supporting system of the friction type operation platform for the side pile extrusion according to claim 1, wherein the supporting hoop device (1) and the inner platform (2) are respectively arranged on the outer wall of the prestressed concrete pipe pile (100), and the prestressed concrete pipe pile (100) is positioned at the center of a pile hole (21) in the center of the inner platform (2) and a center hole formed by two circular arc stirrups (11).

5. The method for constructing the auxiliary supporting system of the friction type operation platform for the pile-forming extrusion according to claim 1, wherein in the step S2, compression internal threads are arranged in the compression nut hole (22), compression external threads which are matched with the compression internal threads are arranged on the compression screw (41), and the compression screw (41) is arranged in the compression nut hole (22) in a threaded engagement mode.

6. The method for constructing the auxiliary supporting system of the friction-type operation platform for the side pile extrusion according to claim 1, wherein in the step S2, the compression end head (42) is composed of a steel member positioned at the rear end and a rubber member positioned at the front end, and the rubber member is extruded on the outer wall of the prestressed concrete pipe pile (100).

7. The method for constructing the auxiliary supporting system of the friction type operation platform for the pile-forming extrusion of the invention as set forth in claim 1, wherein in the step S2, the inner platform (2) and the outer platform (3) are both integrally formed or are plate-type platforms which are formed by a plurality of parts through bolt fixing and splicing, and are integrally in a circular or square metal structure or a plastic structure.

8. The method for constructing the auxiliary supporting system of the pile-side extrusion friction type operating platform according to claim 1, wherein one ends of two circular arc stirrups (11) are hinged and fixed together, and the other ends are fixed through fastening bolts (12); or both ends of the two circular arc stirrups (11) are fixed through fastening bolts (12).