CN210946927U - Repairing structure of lower hinge point base of mast crane boom - Google Patents
Repairing structure of lower hinge point base of mast crane boom Download PDFInfo
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- CN210946927U CN210946927U CN201921433740.9U CN201921433740U CN210946927U CN 210946927 U CN210946927 U CN 210946927U CN 201921433740 U CN201921433740 U CN 201921433740U CN 210946927 U CN210946927 U CN 210946927U
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Abstract
The utility model discloses a restoration structure of hinge point base under mast crane jib frame, it includes: a reinforcing mesh laid on the bottom of the chiseling region; the new embedded steel plate is arranged at the top of the reinforced area; and the two grouting mechanisms are respectively arranged at two sides of the new embedded steel plate. The utility model can repair the base by using the undamaged concrete as the foundation, and provides a novel repair method for repairing the base of the lower hinge point of the upper arm support of the high-pile wharf; the utility model discloses simple structure, the construction is quick, has the greatly reduced construction degree of difficulty, practices thrift prosthetic cost and restores construction period's advantage.
Description
Technical Field
The utility model relates to a base restoration technical field of concrete pier. More specifically, the utility model relates to a restoration structure of hinge point base under mast jib frame.
Background
Along with the development trend of large-scale and heavy-duty loading and unloading of goods at the wharf, more and more wharfs are provided for operation by using mast cranes. The mast crane has the advantages of simple manufacture, convenient assembly and disassembly, large hoisting capacity (up to more than 100 t) and the like, is generally used for loading and unloading operations of wood or steel materials at ports and docks, particularly for hoisting large members, the advantages of the hoisting equipment are more remarkable, and the mast crane can be used for special and large members or equipment which can not be operated by other hoisting machinery. Mast cranes have their obvious disadvantages: the hoisting radius is small, the movement is difficult, more guy cables need to be pulled, the wharf structure is seriously damaged once an accident happens, and the repair difficulty is large.
The arm support lower hinge point base is used as the most complex base (including tensile, compressive, shearing and torsional) of the mast crane, and once the mast crane has an overturning accident, the most seriously damaged base is the concrete abutment of the arm support lower hinge point base. The traditional base repairing method is characterized in that a concrete pier platform at the base is completely excavated, anchor bolts, steel plates and poured concrete are pre-embedded again, the method is high in repairing difficulty, long in construction period and high in engineering cost, and particularly when the high pile pier is excavated and poured again, the lower part of the high pile pier platform structure is a hollow structure, the upper part of the high pile pier platform structure is large-volume concrete, the excavating difficulty is high, the integrity is poor after pouring again, and the like, so that the repairing difficulty is increased.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.
The utility model also aims at providing a repairing structure of the lower hinge point base of the mast crane boom frame, which can repair the base by using undamaged concrete as a foundation and provides a novel repairing mode for repairing the lower hinge point base of the upper boom frame of the high-pile wharf; this use novel simple structure, the construction is quick, has the greatly reduced construction degree of difficulty, practices thrift prosthetic cost and restores construction period's advantage.
In order to achieve these objects and other advantages in accordance with the purpose of the invention, a repairing structure of a lower hinge point base of a mast crane boom is provided, which includes:
the reinforcing mesh is laid at the bottom of a chiseling area of the concrete pier after damaged concrete is chiseled, and the chiseling area comprises a reinforcing area corresponding to the vertical projection of the embedded steel plate and a pre-fixing area of a square annular structure positioned on the periphery of the reinforcing area; the upper part of the concrete original steel bar in the reinforcing area is cut off, the periphery of the steel bar mesh is welded with the concrete original steel bar in the pre-fixing area, and epoxy mortar is poured in the pre-fixing area;
the new embedded steel plate is arranged at the top of the reinforced area, a plurality of anchor rib holes are formed in the new embedded steel plate in advance, when the new embedded steel plate is installed at the top of the reinforced area, one anchor rib hole correspondingly penetrates through one original anchor bolt in the reinforced area, the new embedded steel plate is welded with the tops of all the original anchor bolts, and the lower hinge point base of the new mast crane boom is welded with the upper surface of the new embedded steel plate;
two mud jacking mechanisms, it is used for pouring epoxy mortar to the reinforcement region that is located new pre-buried steel sheet bottom, and two mud jacking mechanisms are located the both sides that set up along its length direction interval of new pre-buried steel sheet respectively, and arbitrary mud jacking mechanism includes the mud jacking pipe that a plurality of mutual parallels and interval set up, and arbitrary mud jacking pipe is perpendicular with the width direction of new pre-buried steel sheet, and the one end of mud jacking pipe is located the bottom of new pre-buried steel sheet, and the other end level extends to in advance solid region and communicate with the mud jacking machine of peripheral hardware.
Preferably, the length and the width of an outer ring of the pre-fixing area of the repair structure of the base of the lower hinge point of the mast crane boom are respectively 1/6-1/3 greater than those of an embedded steel plate.
Preferably, the repair structure of the lower hinge point base of the mast crane boom, the top of the new embedded steel plate and any one of the original anchor bolts, and the welding seam grade requirements of the welding seam between the lower hinge point base of the new mast crane boom and the upper surface of the new embedded steel plate are all 1 grade; and the new embedded steel plate and the top of any original anchor bolt are completed in a plug welding mode.
Preferably, in the repair structure of the base at the lower hinge point of the mast crane boom, in any one grouting mechanism, the distance between any two adjacent grouting pipes is 30-50 cm.
Preferably, the new embedded steel plate of the repair structure of the lower hinge point base of the mast crane boom frame is further provided with a plurality of exhaust holes.
Preferably, a circle of sealing film is arranged between the pre-fixing area and the reinforcing area so as to isolate the pre-fixing area from the reinforcing area.
The utility model discloses at least, include following beneficial effect:
the utility model can repair the base by using the undamaged concrete as the foundation, and provides a novel repair method for repairing the base of the lower hinge point of the upper arm support of the high-pile wharf; this use novel simple structure, the construction is quick, has the greatly reduced construction degree of difficulty, practices thrift prosthetic cost and restores construction period's advantage.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the chiseling region of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can implement the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
It is to be noted that the experimental methods described in the following embodiments are all conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified.
In the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1-2, the utility model provides a repair structure of hinge point base under mast crane jib frame, its characterized in that, it includes:
the reinforcement mesh 1 is laid at the bottom of a chiseled area of the concrete pier after damaged concrete is chiseled, and the chiseled area comprises a reinforcement area 81 corresponding to the vertical projection of an embedded steel plate and a pre-fixing area 82 of a square annular structure positioned on the periphery of the reinforcement area 81; the upper part of the concrete original steel bar in the reinforcing area 81 is cut off, the periphery of the steel bar mesh 1 is welded with the concrete original steel bar in the pre-fixing area 82, and epoxy mortar 4 is poured in the pre-fixing area 82;
the new embedded steel plate 2 is arranged at the top of the reinforcing area 81, a plurality of anchor rib holes are formed in the new embedded steel plate 2 in advance, when the new embedded steel plate 2 is installed at the top of the reinforcing area 81, one original anchor bolt 5 in the reinforcing area 81 correspondingly penetrates through one anchor rib hole, the new embedded steel plate 2 is welded with the tops of all the original anchor bolts 5, and the lower hinge point base 7 of the new mast boom support is welded with the upper surface of the new embedded steel plate 2;
two mud jacking mechanisms, it is used for pouring epoxy mortar 4 to the regional 81 of consolidating that is located new pre-buried steel sheet 2 bottom, two mud jacking mechanisms are located the both sides that set up along its length direction interval of new pre-buried steel sheet 2 respectively, and arbitrary one mud jacking mechanism includes the mud jacking pipe 3 that a plurality of mutual parallels and interval set up, and arbitrary mud jacking pipe 3 is perpendicular with new pre-buried steel sheet 2's width direction, and the one end of mud jacking pipe 3 is located new pre-buried steel sheet 2's bottom, and the other end level extends to in advance solid region 82 and communicate with the mud jacking machine of peripheral hardware.
In the technical scheme, the base can be repaired by using the undamaged concrete as a foundation, and a novel repairing mode is provided for repairing the lower hinge point base 7 of the upper arm frame of the high-pile wharf; this use novel simple structure, the construction is quick, has the greatly reduced construction degree of difficulty, practices thrift prosthetic cost and restores construction period's advantage.
The utility model discloses a prosthetic concrete construction method for hinge point base 7 under mast crane jib frame includes following step:
step S1, cutting off the embedded steel plate at the bottom of the base from the lower hinge point base 7 of the original mast arm support, and cutting off the part of any original anchor bolt 5 welded with the embedded steel plate; then detecting concrete of an abutment below the steel plate, determining the damaged depth and the damaged range of the concrete, and recording the depth amm; the application range of the method is that the base of 1/3 with a being less than the height of the original anchor bolt 5 is damaged, if a is more than or equal to 1/3 of the height of the original anchor bolt 5, the traditional repairing method of removing all concrete abutments is adopted; rechecking the bearing capacity of the original anchor bolts 5, implanting at least one new anchor bolt on the basis of the original anchor bolts 5 if the bearing capacity of the original anchor bolts 5 is not enough to bear the load of the mast crane, otherwise, not increasing, wherein the number of the new anchor bolts is based on the requirement of the bearing capacity, and any new anchor bolt is positioned between any two adjacent original anchor bolts; the new anchor bolt is implanted in a mode that a bolt hole is drilled in the bottom of the reinforced area, the new anchor bolt is vertically inserted into the bolt hole downwards and is fixed by glue; if a new anchor bolt is added, correspondingly in the subsequent step S4, an anchor bar hole corresponding to the new anchor bolt needs to be opened on the new pre-buried steel plate for the new anchor bolt to penetrate through;
s2, chiseling damaged concrete, wherein the depth of a concrete chiseling area is amm, the horizontal width and the length of the chiseling area are larger than those of a lower hinge point base 7 of an original mast cantilever crane and are 1/6-1/3, namely the chiseling area comprises a reinforcing area 81 corresponding to the vertical projection of an embedded steel plate and a pre-reinforcing area 82 of a square annular structure located on the periphery of the reinforcing area 81;
step S3, cutting off the upper part of the concrete original reinforcing steel bar in the reinforced area 81, washing the bottom surface and the side surface of the chiseled area with high-pressure fresh water, washing the side wall of the anchor bolt in the chiseled area, washing the side wall of the concrete original reinforcing steel bar in the pre-fixed area 82, discharging the washing accumulated water after the washing is finished, pumping out the accumulated water by using a water pumping pipe, leveling the bottom surface of the chiseled area by using epoxy mortar 4, cleaning the surface of the chiseled area, ensuring the smoothness of the bottom of the chiseled area, and facilitating the subsequent pouring of the epoxy mortar 4; then, a reinforcing mesh 1 is laid at the bottom of the chiseled area, and the periphery of the reinforcing mesh is welded with the original reinforcing steel bars of the concrete in the pre-fixing area 82;
step S4, forming a plurality of anchor bar holes in the new embedded steel plate 2, wherein any anchor bar hole can be formed at an inclination angle of 30-45 degrees for convenient welding, and meanwhile, a plurality of exhaust holes are formed in the new embedded steel plate 2; installing a new embedded steel plate 2 to the top of the reinforcing area 81, so that one original anchor bolt 5 in the reinforcing area 81 correspondingly penetrates through one anchor rib hole, welding the new embedded steel plate 2 to the tops of all the original anchor bolts 5, and welding a lower hinge point base 7 of the new mast crane boom frame to the upper surface of the new embedded steel plate 2; according to the invention, welding is completed before the epoxy mortar 4 is poured, so that damage to the performance of the epoxy mortar 4 caused by overhigh welding temperature when the bottom of the base is repaired by the epoxy mortar 4 and then the base is welded is prevented;
step S5, laying two grouting mechanisms between the new embedded steel plate 2 and the reinforcing mesh 1, wherein the two grouting mechanisms are respectively positioned on two sides of the new embedded steel plate 2 at intervals along the length direction of the new embedded steel plate, any one grouting mechanism comprises a plurality of grouting pipes 3 which are parallel to each other and are arranged at intervals, the lengths of the plurality of grouting pipes 3 can be unequal, and the distance between any two adjacent grouting pipes 3 is 30-50 cm; any one of the grouting pipes 3 is vertical to the width direction of the new embedded steel plate 2, one end of the grouting pipe 3 is positioned at the bottom of the new embedded steel plate 2, and the other end horizontally extends to the pre-fixing area 82 and is communicated with an external grouting machine; a ring of sealing film is arranged between the pre-fixing zone 82 and the reinforcing zone 81, so as to isolate the pre-fixing zone 82 from the reinforcing zone 81;
step S6, pouring epoxy mortar 4 in the pre-fixing area 82 to be flush with the top of the chiseled-off area, reserving one exhaust hole on a new pre-buried steel plate 2 after pouring is completed, plugging the rest exhaust holes, communicating the other ends of all the grouting pipes 3 with the air outlets of the air blowing devices, detecting the air tightness of the plurality of grouting pipes 3 and the reinforcing area 81, communicating the other ends of all the grouting pipes 3 with grouting ports of grouting machines after the air tightness is detected to be qualified, starting the grouting machines, and filling the epoxy mortar 4 into the reinforcing area 81 through the plurality of grouting pipes 3;
step S7, paving asphalt 6 in the peripheral area of the new embedded steel plate 2, which is positioned at the lower hinge point base 7 of the new mast crane boom; because the top elevation of the original anchor bolt 5 is reduced by a certain height (generally 30-50 mm) when the pre-buried steel plate is cut in step S1, the top elevation of the new pre-buried steel plate 2 after plug welding repair is correspondingly reduced (30-50 mm) compared with that of the original pre-buried steel plate, a groove of a square annular structure is formed at a part (the periphery of the base 7 of the hinge point under the arm support) where the upper surface of the new pre-buried steel plate 2 is not covered by the base, and asphalt 6 is adopted for sealing, so that water accumulation in the groove is prevented, and the soaking damage of the new pre-buried steel plate 2 caused by the water accumulation is avoided.
Compared with the traditional base repairing method, the method combining detection, design and construction is adopted, and the original base is utilized to form a non-damaged foundation, so that the difficult problems of large excavation amount and pouring anew of the high-pile wharf are solved, the construction difficulty is reduced, and the construction period and the construction cost are saved. Assuming that the damaged depth is calculated to be 150mm, compared with the traditional base repairing method, the method has the advantages that the excavation engineering amount is saved by about 75%, the construction period is saved by about 35%, and the construction cost is saved by about 40%; the requirement of structural safety is met, and meanwhile, obvious economic benefit is obtained.
Compared with the traditional base repairing method, the repairing method adopts a method combining detection, design and construction, and utilizes the original base without damage, so that the difficult problems of large excavation amount and pouring again of the high-pile wharf are solved, the construction difficulty is reduced, and the construction period and the construction cost are saved. Assuming that the damaged depth is calculated to be 150mm, compared with the traditional base repairing method, the method has the advantages that the excavation engineering amount is saved by about 75%, the construction period is saved by about 35%, and the construction cost is saved by about 40%; the requirement of structural safety is met, and meanwhile, obvious economic benefit is obtained.
In another technical scheme, in the repairing structure of the base of the lower hinge point of the mast crane boom, the length and the width of the outer ring of the pre-fixing area 82 are respectively 1/6-1/3 greater than those of an embedded steel plate. The firmness of the concrete abutment for repairing and reinforcing is ensured.
In another technical scheme, the repair structure of the lower hinge point base of the mast crane boom, the welding seam grade requirements of the new embedded steel plate 2 and the top of any original anchor bolt 5, and the welding seam grade requirements of the lower hinge point base 7 of the new mast crane boom and the upper surface of the new embedded steel plate 2 are all 1 grade; the new embedded steel plate 2 and the top of any original anchor bolt 5 are completed in a plug welding mode, and the connection strength of the new embedded steel plate 2 and the anchor bolt meets the standard requirement.
In another technical scheme, in the repair structure of the base at the lower hinge point of the mast crane boom, in any one grouting mechanism, the distance between any two adjacent grouting pipes 3 is 30-50 cm. And a plurality of grouting pipes 3 are arranged to accelerate grouting speed, so that the construction period is further shortened.
In another technical scheme, the new embedded steel plate 2 of the repair structure of the base of the lower hinge point of the mast crane boom is also provided with a plurality of exhaust holes.
In the technical scheme, after the epoxy mortar 4 in the pre-fixing area 82 is poured and before the epoxy mortar 4 is poured into the reinforcing area 81 through two grouting mechanisms, one exhaust hole plug is reserved on a new pre-buried steel plate 2, the other exhaust holes are plugged, the other ends of all grouting pipes 3 are communicated with the air outlet of an air blowing device, the air tightness of the plurality of grouting pipes 3 and the reinforcing area 81 is detected, after the air tightness is detected to be qualified, the other ends of all grouting pipes 3 are communicated with grouting ports of grouting machines, the grouting machines are started, and the epoxy mortar 4 is filled into the reinforcing area 81 through the plurality of grouting pipes 3. The air tightness of the reinforcement area 81 at the bottom of the new embedded steel plate 2 is ensured, so that whether the filling is finished or not can be accurately judged when the epoxy mortar 4 is poured into the reinforcement area 81 in the following process; and (3) starting the grouting machine to inject the epoxy mortar 4 into the reinforced area 81, and when the epoxy mortar 4 flows out of the exhaust hole, indicating that the epoxy mortar 4 in the reinforced area 81 is filled.
In another technical solution, in the repair structure of the base at the lower hinge point of the mast crane boom, a circle of sealing film is arranged between the pre-fixing area 82 and the reinforcing area 81, so that the pre-fixing area 82 is isolated from the reinforcing area 81. When epoxy mortar 4 is poured into pre-cured area 82, the thin film can block epoxy mortar 4 from flowing to reinforced area 81.
The number of apparatuses and the scale of the process described here are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (6)
1. The repair structure of the base of the lower hinge point of the mast crane boom is characterized by comprising:
the reinforcing mesh is laid at the bottom of a chiseling area of the concrete pier after damaged concrete is chiseled, and the chiseling area comprises a reinforcing area corresponding to the vertical projection of the embedded steel plate and a pre-fixing area of a square annular structure positioned on the periphery of the reinforcing area; the upper part of the concrete original steel bar in the reinforcing area is cut off, the periphery of the steel bar mesh is welded with the concrete original steel bar in the pre-fixing area, and epoxy mortar is poured in the pre-fixing area;
the new embedded steel plate is arranged at the top of the reinforced area, a plurality of anchor rib holes are formed in the new embedded steel plate in advance, when the new embedded steel plate is installed at the top of the reinforced area, one anchor rib hole correspondingly penetrates through one original anchor bolt in the reinforced area, the new embedded steel plate is welded with the tops of all the original anchor bolts, and the lower hinge point base of the new mast crane boom is welded with the upper surface of the new embedded steel plate;
two mud jacking mechanisms, it is used for pouring epoxy mortar to the reinforcement region that is located new pre-buried steel sheet bottom, and two mud jacking mechanisms are located the both sides that set up along its length direction interval of new pre-buried steel sheet respectively, and arbitrary mud jacking mechanism includes the mud jacking pipe that a plurality of mutual parallels and interval set up, and arbitrary mud jacking pipe is perpendicular with the width direction of new pre-buried steel sheet, and the one end of mud jacking pipe is located the bottom of new pre-buried steel sheet, and the other end level extends to in advance solid region and communicate with the mud jacking machine of peripheral hardware.
2. The repair structure of a base of a lower hinge point of a mast crane boom according to claim 1, wherein the length and the width of an outer ring of the pre-fixing area are 1/6-1/3 greater than those of an embedded steel plate respectively.
3. The repair structure of the lower hinge point base of the mast crane boom according to claim 2, wherein the welding seam grade requirements of the new embedded steel plate and the top of any one of the original anchor bolts and the welding seam grade requirements of the lower hinge point base of the new mast crane boom and the upper surface of the new embedded steel plate are 1 grade; and the new embedded steel plate and the top of any original anchor bolt are completed in a plug welding mode.
4. The repair structure of the base of the lower hinge point of the mast crane boom according to claim 3, wherein in any one grouting mechanism, the distance between any two adjacent grouting pipes is 30-50 cm.
5. The repair structure for the base of the lower hinge point of the mast crane boom according to claim 4, wherein the new pre-buried steel plate is further provided with a plurality of exhaust holes.
6. A prosthetic construction for a base at a lower hinge point of a mast boom according to claim 5, characterised in that a ring of sealing membrane is provided between the pre-fixing region and the reinforcing region to isolate the pre-fixing region from the reinforcing region.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921433740.9U CN210946927U (en) | 2019-08-30 | 2019-08-30 | Repairing structure of lower hinge point base of mast crane boom |
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| CN201921433740.9U CN210946927U (en) | 2019-08-30 | 2019-08-30 | Repairing structure of lower hinge point base of mast crane boom |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115233835A (en) * | 2022-06-20 | 2022-10-25 | 中国能源建设集团广东省电力设计研究院有限公司 | Suspender embedded part at bottom of large-scale reinforced concrete beam |
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2019
- 2019-08-30 CN CN201921433740.9U patent/CN210946927U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115233835A (en) * | 2022-06-20 | 2022-10-25 | 中国能源建设集团广东省电力设计研究院有限公司 | Suspender embedded part at bottom of large-scale reinforced concrete beam |
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