CN107419740B - Steel bearing platform of beam-holding tower crane foundation and construction method thereof - Google Patents
Steel bearing platform of beam-holding tower crane foundation and construction method thereof Download PDFInfo
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- CN107419740B CN107419740B CN201710303428.7A CN201710303428A CN107419740B CN 107419740 B CN107419740 B CN 107419740B CN 201710303428 A CN201710303428 A CN 201710303428A CN 107419740 B CN107419740 B CN 107419740B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
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- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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Abstract
The invention relates to a steel bearing platform of a girder-holding tower crane foundation and a construction method, wherein the steel bearing platform comprises the following components: the beam holding structure is arranged on a frame beam of the existing structure and is close to a beam column joint of the frame beam and the frame column, the beam holding structure penetrates through parts of the floor slab, which are positioned on two sides of the frame beam, and is clamped and fastened on the frame beam, and a mounting surface is formed on the top of the frame beam by the beam holding structure; and installing and fixing a basic steel bearing platform on the installation surface. The girder holding structure is arranged on the frame girder, the girder holding structure is used for bearing the foundation steel bearing platform, the girder holding structure and the frame girder are held together to form a stable stressed whole, the anti-pulling effect of the joint of the foundation steel bearing platform and the girder holding structure can be improved, the girder holding structure and the frame girder form the stressed whole, the overturning force of the tower crane can be effectively resisted, the support stability of the foundation steel bearing platform is ensured, and the use safety of the tower crane is ensured.
Description
Technical Field
The invention relates to the field of construction of tower crane foundation bearing platforms, in particular to a beam-holding tower crane foundation steel bearing platform and a construction method thereof.
Background
The tower crane is the most commonly used hoisting equipment in the construction engineering, and in order to ensure the use safety of the tower crane, a tower crane foundation bearing platform with a concrete structure is generally adopted when the tower crane is installed on a construction site. Specifically, 4 foundation piles are driven into the installation position of the tower crane, then a lattice column is inserted into the foundation piles, then a concrete bearing platform is constructed on the lattice column, and the tower crane is installed on the concrete bearing platform to carry out hoisting operation. After the construction of the tower crane is completed, the concrete bearing platform, the lattice columns and part of foundation piles are removed, so that the waste of materials and human resources is caused, and the cost is high.
In order to avoid the need of constructing complex construction processes such as tower crane foundation piles, lattice columns, concrete bearing platforms and the like during the installation of the tower crane, the prior China patent (application number 2016014161266, the invention creates a reinforced concrete cross-shaped tower crane foundation and a construction method thereof) provides a reinforced concrete cross-shaped tower crane foundation, wherein the tower crane foundation bearing platforms are constructed on the existing structure and are positioned right above frame columns of the existing structure, the frame columns are utilized to replace the piles of the traditional tower crane foundation, and the need of constructing complex construction processes such as tower crane foundation piles, lattice columns and the like is avoided. However, the tower crane foundation bearing platform in the prior patent application still adopts a concrete structure, construction steps such as formwork support, concrete pouring, form removal and the like are required to be carried out, the concrete structure still needs to be removed in the later stage, and the construction is complicated, materials and manpower resources are wasted, and the construction period and the construction cost are influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, provides a steel bearing platform of a beam-holding tower crane foundation and a construction method thereof, and solves the problems that the existing tower crane concrete bearing platform has complicated construction and dismantling process steps, wastes materials and manpower resources, and affects the construction period and the construction cost.
The technical scheme for achieving the purpose is as follows:
the invention provides a construction method of a steel bearing platform of a girder-holding tower crane foundation, which comprises the following steps:
constructing a beam holding structure on a frame beam of an existing structure at a beam column joint close to the frame beam and the frame column, enabling the beam holding structure to penetrate through parts, located on two sides of the frame beam, of a floor slab and clamp and fix the parts on the frame beam, wherein a mounting surface is formed on the top of the frame beam by the beam holding structure; and
and installing a foundation steel bearing platform on the installation surface, and arranging the foundation steel bearing platform on the corresponding installation surface and connecting and fixing the foundation steel bearing platform with the installation surface, thereby completing the construction of the foundation steel bearing platform of the girder-holding tower crane.
The invention adopts the frame beam with the existing structure as the foundation for the installation of the tower crane, and utilizes the frame beam and the frame column to provide powerful support for the tower crane, thereby avoiding the complex construction processes of constructing tower crane foundation piles, lattice columns, concrete bearing platforms and the like in the traditional process and saving the construction period and the cost. According to the invention, the foundation steel bearing platform is adopted to replace the concrete bearing platform, the installation and the disassembly of the foundation steel bearing platform are simple and convenient, and the steel member can be reused, so that the waste of materials is avoided, and the construction period and the construction cost are saved. For satisfying the atress requirement of foundation steel cushion cap, install the girder-holding structure on the frame roof beam, utilize girder-holding structure to bear the foundation steel cushion cap, this girder-holding structure is embraced with the frame roof beam and is in the same place, stable atress is whole has been formed, the gravity of the tower crane of foundation steel cushion cap not only transmission, still can transmit the overturning force of tower crane, the overturning force can form the effect of drawing in foundation steel cushion cap and girder-holding structure junction, this girder-holding structure can improve the resistance to plucking effect of foundation steel cushion cap and girder-holding structure junction, girder-holding structure and frame roof beam form the atress whole, can effectively resist the overturning force of tower crane, ensure the support stability of foundation steel cushion cap, the safety in utilization of tower crane has been guaranteed.
The invention further improves the construction method of the steel bearing platform of the beam-holding tower crane foundation, which is characterized in that the construction beam-holding structure further comprises:
providing a beam top support, placing the beam top support at the top of the frame beam, and reserving a set distance at the joint of the beam top support and the beam column;
providing a beam bottom support, attaching the beam bottom support to the bottom of the frame beam and arranging the beam bottom support corresponding to the beam top support;
providing a tie bar, attaching the tie bar to two sides of the frame beam, fixedly connecting one end of the tie bar with the beam bottom support, penetrating the floor slab at the top of the frame beam through the other end of the tie bar and fixedly connecting the tie bar with the beam top support, and fastening the tie bar so that the beam top support and the beam bottom support are clamped and fastened on the frame beam.
The construction method of the foundation steel bearing platform of the girder-holding tower crane is further improved in that when the girder-holding structure is constructed, the girder-holding structure is constructed at the cross joint close to the frame girder, so that a mounting surface corresponding to the corner of the foundation steel bearing platform is formed through the girder-holding structure.
The invention relates to a construction method of a foundation steel bearing platform of a beam-holding tower crane, which is further improved in that the foundation steel bearing platform is installed on the installation surface, and comprises the following steps:
providing a steel member, and placing the end part of the steel member on a corresponding mounting surface and fixedly connecting the end part with the mounting surface;
and (3) penetrating the end part of one steel member of the two adjacent steel members through the end part of the other steel member and fixedly connecting the two adjacent steel members, so that a basic steel bearing platform is formed by enclosing the steel members.
The construction method of the girder-holding tower crane foundation steel bearing platform is further improved in that when a girder-holding structure is constructed, a supporting surface is formed at the bottom of the frame girder by the girder-holding structure;
and providing a diagonal support, and connecting the diagonal support to the supporting surface and the floor at the bottom of the frame column.
The invention also provides a steel bearing platform of the beam-holding tower crane foundation, which comprises:
the beam holding structure is arranged on a frame beam of the existing structure and is close to a beam column joint of the frame beam and the frame column, the beam holding structure penetrates through parts of the floor slab, which are positioned on two sides of the frame beam, and is clamped and fastened on the frame beam, and a mounting surface is formed on the top of the frame beam by the beam holding structure; and
and installing and fixing a basic steel bearing platform on the installation surface.
The invention further improves a girder-holding tower crane foundation steel bearing platform, which comprises a girder top support arranged at the top of a frame girder, a girder bottom support attached to the bottom of the frame girder and tie bars attached to two sides of the frame girder, wherein the girder-holding structure comprises a girder top support and a girder bottom support;
a set distance is reserved between the beam top support and the beam column joint;
the beam bottom support is arranged corresponding to the beam top support;
one end of the tie bar is fixedly connected with the beam bottom support, the other end of the tie bar penetrates through the floor slab at the top of the frame beam and is fixedly connected with the beam top support, and the tie bar is fastened, so that the beam top support and the beam bottom support are clamped and fastened on the frame beam.
The foundation steel bearing platform of the girder-holding tower crane is further improved in that the girder-holding structure is arranged close to a crisscross joint of the frame girder, so that a mounting surface corresponding to the corner of the foundation steel bearing platform is formed through the girder-holding structure.
The foundation steel bearing platform of the beam-holding tower crane is further improved in that the foundation steel bearing platform comprises a plurality of steel members, the end parts of the steel members are arranged on corresponding mounting surfaces and fixedly connected with the mounting surfaces, and the end part of one steel member of two adjacent steel members penetrates through the end part of the other steel member and fixedly connected with the two adjacent steel members, so that the foundation steel bearing platform is formed by encircling the steel members.
The invention further improves the steel bearing platform of the girder-holding tower crane foundation, which also comprises a diagonal column support;
the beam holding structure is characterized in that a supporting surface is formed at the bottom of the frame beam, and the inclined column supports are connected with the supporting surface and the floor slab at the bottom of the frame column in an inclined supporting manner.
Drawings
Fig. 1 is a schematic structural view of a steel platform of a girder-holding tower crane foundation in which a floor slab is omitted in a use state.
Fig. 2 is a top view of the structure shown in fig. 1.
Fig. 3 is a schematic view of the structure of fig. 2 with the mounting base omitted.
Fig. 4 is a cross-sectional view of the trailing beam structure shown in fig. 3.
Fig. 5 is a side view of one side of a girder-holding structure in a girder-holding tower crane foundation steel bearing platform according to the present invention.
FIG. 6 is a side view of the other side of the girder structure in the steel deck of the girder-holding tower crane foundation of the present invention.
Fig. 7 is a cross-sectional view taken along A1-A1 in fig. 5.
Fig. 8 is a cross-sectional view taken along A2-A2 in fig. 5.
FIG. 9 is a top perspective view of the steel components of the foundation steel deck of the girder-holding tower crane foundation steel deck of the present invention.
Fig. 10 is a side view of the steel components of the foundation steel deck of the girder-holding tower crane foundation steel deck of the present invention.
FIG. 11 is a schematic view of the structure of a connection between two steel members of a foundation steel cap in a girder-holding tower crane foundation steel cap according to the present invention.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples.
Referring to fig. 1, the invention provides a steel bearing platform of a beam-holding tower crane foundation and a construction method thereof, wherein nodes of frame beams and frame columns of the existing structure (the existing building structure) are used as support bases for tower crane installation, the beam-holding structure and the frame beams are held together to form a more stable integral stress system, the steel bearing platform is installed on the beam-holding structure, and the tower crane is installed through the steel bearing platform. The invention adopts a mechanical installation mode to generate an effective force transfer system with the existing beam column node, thereby avoiding the defects and hidden troubles that the prior beam column node is used as a vertical bearing structure of a tower crane foundation bearing platform, the difficulty of bar planting and drilling is high, the bar planting effect is difficult to ensure, and the like. The safety of the large-scale machinery in the construction site of the building engineering in the installation and use process is ensured. The steel bearing platform of the girder-holding tower crane foundation and the construction method thereof are described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the beam-holding tower crane foundation steel bearing platform comprises a beam-holding structure 21 and a foundation steel bearing platform 22, the beam-holding tower crane foundation steel bearing platform is arranged at beam column nodes 13 of frame beams 11 and frame columns 12 of an existing structure 10, the existing structure 10 is a constructed building structure, the frame beams 11 and the frame columns 12 of the existing structure 10 are used as support foundations for tower crane installation, the complex construction processes of constructing tower crane foundation piles, lattice columns, concrete bearing platforms and the like required by the traditional process can be avoided, and the construction period and cost are saved. The top of the frame beam 11 shown in fig. 1 is constructed with a floor slab, which is omitted for the convenience of illustrating the installation structure of the beam holding structure 21, and the top of the lower frame beam 11' is also constructed with a floor slab, which is also omitted for the convenience of illustrating the structure of the beam holding tower foundation steel bearing platform. Frame posts 12 are supported at the cross-connection of the frame beams 11, and the frame posts 12 are supported between the cross-connection of the frame beams 11 and the cross-connection of the frame beams 11'.
The beam holding structure 21 is installed on the frame beam 11 and is arranged near the beam column node 13, the beam holding structure 21 penetrates through parts of the floor plates on two sides of the frame beam 11 and is clamped and fixed on the frame beam 11, and the beam holding structure 21 is clamped and fixed on the frame beam 11 by penetrating the floor plates at the frame beam 11 from two sides of the frame beam 11, so that the beam holding structure 21 and the frame beam 11 form a stable integral stress system. A mounting surface 211 is formed on the top of the girder-holding structure 21; the foundation steel bearing platform 22 is fixedly arranged on the installation surface 211, the foundation steel bearing platform 22 provides an installation foundation for the tower crane, and the tower crane is installed on the foundation steel bearing platform 22 and is used for hoisting operation on a construction site.
The beam holding structure clamp is fastened on the frame beam, so that the beam holding structure and the frame beam form an integral stress system, an effective force transmission system is generated between the mechanical installation mode and the existing beam column joint, the stability of the supporting structure can be ensured, and the use safety of the tower crane is ensured. The tower crane is placed on the foundation steel bearing platform, the gravity and the overturning force of the tower crane are transmitted through the foundation steel bearing platform, the connection part of the foundation steel bearing platform and the beam holding structure can form a drawing effect due to the existence of the overturning force of the tower crane, the beam holding structure and the frame beam bear the drawing force formed by the overturning force of the tower crane together, the anti-pulling effect of the foundation steel bearing platform and the beam holding structure can be improved, the overturning force of the tower crane is effectively resisted, and the safety in the installation and use process of large machinery on a construction site of a building engineering is further ensured.
As a preferred embodiment of the present invention, as shown in fig. 3 to 5, the beam holding structure 21 includes a beam top support 213 disposed at the top of the frame beam 11, a beam bottom support 214 attached to the bottom of the frame beam 11, and tie bars 215 attached to both sides of the frame beam 11, wherein a set distance is left between the beam top support 213 and the beam column node 13, the beam bottom support 214 is disposed corresponding to the beam top support 213, one end of the tie bar 215 is fixedly connected to the beam bottom support, and the other end of the tie bar 215 passes through a floor slab at the top of the frame beam 11 and is fixedly connected to the beam top support 213, and the tie bars 215 are fastened so that the beam top support 213 and the beam bottom support 214 are clamped and fixed to the frame beam 11. The tie bars 215 penetrate through the floor slab, and the connection strength of the tie bars 215 can be further improved through the floor slab, so that the structural strength of the girder holding structure 21 is improved. When the girder holding structure 21 is installed, holes are drilled in the floor plates on two sides of the frame girder 11 corresponding to the setting positions of the tie bars 215, and the tie bars 215 correspondingly penetrate through the drilled holes, so that the girder top support 213 and the girder bottom support 214 of the frame girder 11 can be fastened and connected through the floor plates. The top of the roof support 213 forms a corresponding mounting surface 211, and the foundation steel cap 22 is mounted on top of the roof support 213 when the foundation steel cap 22 is mounted.
As another preferred embodiment of the present invention, the beam holding structure 21 is disposed near the cross joint of the frame beam 11, which is the same joint as the beam column joint 13, so that the beam holding structure 21 is formed on the mounting surface 211 disposed at the corner of the base steel deck 22. The four frame beams 11 are arranged in a crisscross manner, so that a beam holding structure 21 is mounted on each frame beam 11, the beam holding structure 21 is arranged at four square corners, mounting surfaces 211 of the beam holding structure 21 are correspondingly arranged at the four square corners, and a mounting foundation is provided for a basic steel bearing platform 22.
As a further preferred embodiment of the present invention, as shown in fig. 1 and 3, the base steel platform 22 includes a plurality of steel members 221, the ends of the steel members 221 are disposed on the corresponding mounting surfaces 211 and fixedly connected to the mounting surfaces 211, and the plurality of steel members 221 are spliced end to end and are enclosed to form the base steel platform 22, and the base steel platform 22 is a square frame structure. The end of one of the two adjacent steel members 221 passes through the end of the other steel member and fixedly connects the two adjacent steel members, thereby forming the base steel cap 22 by the steel member enclosure. After the end part of one steel member passes through the end part of the other steel member, welding and fixing are carried out at the joint of the two steel members, and the top surfaces of the two adjacent steel members are arranged in a flush way. Further, as shown in fig. 9 to 10, the steel member 221 is made of i-steel, a plurality of stiffening ribs 222 are provided in the middle of the steel member 221, the stiffening ribs 222 are vertically attached to the web plate and the upper and lower flange plates of the i-steel, and the support strength of the i-steel is improved by the provision of the stiffening ribs 222. Referring to fig. 1, a mount 31 is mounted on the base steel platform 22, and the mount 31 is mounted in the middle of the steel member 221, that is, in a position on the steel member 221 where the stiffening rib 222 is correspondingly disposed, the steel member 221 provides a strong support for the mount 31. Further, as shown in fig. 11, when the two steel members 221 are in butt joint connection, the upper flange plate and the lower flange plate of the first steel member are cut off to form a section to accommodate the grooves of the upper flange plate and the lower flange plate of the second steel member, the web plate of the first steel member is provided with a web through groove corresponding to the second steel member, the web plate of the second steel member is divided into two parts by the through groove, the web plate of the first steel member is placed in the through groove, the web plate of the first steel member is abutted against two sides of the web plate of the second steel member and is arranged in the grooves formed in the upper flange plate of the first steel member, the bottom of the joint of the two upper flange plates is provided with welding rods 223 to realize the fixed connection of the upper flange plates of the first steel member and the second steel member, the lower flange plate of the second steel member is placed in the grooves formed in the lower flange plate of the first steel member, and the top of the joint of the two lower flange plates is provided with welding rods 223 to realize the fixed connection of the first steel member and the lower flange plate of the second steel member.
As a further preferred embodiment of the present invention, as shown in fig. 1, the steel platform of the girder-holding tower crane foundation of the present invention further includes a diagonal strut 23, the girder-holding structure 21 is formed with a supporting surface 212 at the bottom of the frame girder 11, the diagonal strut 23 is connected between the supporting surface 212 and the floor slab at the bottom of the frame column 12 in a diagonal manner, and the diagonal strut 23 provides a diagonal supporting force for the girder-holding structure 21. The diagonal bracing 23 forms an effective force transfer system, avoids the oversized deformation of the upper concrete frame beam 11 and increases the bearing capacity of the upper concrete frame beam 11, the diagonal bracing 23 is supported in four directions and the bottoms thereof are converged at one point, compared with the traditional four independent vertical bracing, under the load action of the upper tower crane, the diagonal bracing 23 can bear more balanced force, and the mutual restriction action between the diagonal bracing is increased. Preferably, the diagonal strut 23 is of i-steel. For the installation of being convenient for the batter post support to and improve the stability of transferring power of batter post support 23, set up in the junction of frame roof beam 11' and frame post 12 and hold pedestal 24, should hold pedestal 24 and set up around frame post 12, hold pedestal 24 and alternate fixed connection by a plurality of I-steel and form, the cushion cap pedestal 24 fixed connection is on the floor of frame post 12 bottom department, supports batter post support 23 together through frame post 12 and floor, forms stable atress whole, provides powerful support for embracing beam structure 21.
As still another preferred embodiment of the present invention, as shown in fig. 5 and 6, the beam top support 213 and the beam bottom support 214 of the girder holding structure 21 of the present invention have the same structure, and are mirror images of each other and are provided at the top and bottom of the frame girder, and the specific structure of the support will be described below by taking the beam top support 213 as an example. The roof beam support 213 includes a first support plate 2131, a second support plate 2132, a transverse connection plate 2133, a longitudinal connection plate 2134 and a reinforcing plate 2135, wherein the first support plate 2131 and the second support plate 2132 are oppositely arranged, the transverse connection plate 2133 and the longitudinal connection plate 2134 are supported and connected between the first support plate 2131 and the second support plate 2132, three transverse connection plates 2133 are arranged at intervals between the first support plate 2131 and the second support plate 2132, two longitudinal connection plates 2134 are arranged at intervals, the reinforcing plate 2135 is arranged at intervals on one side of the installation tie bars 215, and through holes 2136 are arranged at intervals on two opposite sides of the second support plate 2132 and used for penetrating and connecting the tie bars 215.
The beam-holding type foundation steel bearing platform provided by the invention adopts the mechanical connection of the beam-holding structure and the frame beam, belongs to a great innovation of design and construction, and can provide stable support for the tower crane through verification, so that the use safety of the tower crane is ensured.
The construction method of the girder-holding type foundation steel bearing platform provided by the invention is described below.
The invention provides a construction method of a steel bearing platform of a girder-holding tower crane foundation, which comprises the following steps:
as shown in fig. 1 and 2, a beam holding structure 21 is constructed on a frame beam 11 of an existing structure 10 at a beam column node 13 near the frame beam 11 and the frame column 12, the beam holding structure 21 penetrates through parts of a floor slab on two sides of the frame beam 11 and is clamped and fixed on the frame beam 11, and a mounting surface 211 is formed on the top of the frame beam 11 by the beam holding structure 21; and
and installing the foundation steel bearing platform 22 on the installation surface 211, and placing the foundation steel bearing platform 22 on the corresponding installation surface 211 and connecting and fixing the foundation steel bearing platform with the installation surface 211, thereby completing the construction of the foundation steel bearing platform of the girder-holding tower crane. The foundation steel bearing platform 22 provides an installation foundation for the tower crane, and the tower crane is installed on the foundation steel bearing platform 22 and is used for hoisting operation on a construction site.
The invention adopts the frame beam with the existing structure as the foundation for the installation of the tower crane, and utilizes the frame beam and the frame column to provide powerful support for the tower crane, thereby avoiding the complex construction processes of constructing tower crane foundation piles, lattice columns, concrete bearing platforms and the like in the traditional process and saving the construction period and the cost. According to the invention, the foundation steel bearing platform is adopted to replace the concrete bearing platform, the installation and the disassembly of the foundation steel bearing platform are simple and convenient, and the steel member can be reused, so that the waste of materials is avoided, and the construction period and the construction cost are saved. For satisfying the atress requirement of foundation steel cushion cap, install the girder-holding structure on the frame roof beam, utilize girder-holding structure to bear the foundation steel cushion cap, this girder-holding structure is embraced with the frame roof beam and is in the same place, stable atress is whole has been formed, the gravity of the tower crane of foundation steel cushion cap not only transmission, still can transmit the overturning force of tower crane, the overturning force can form the effect of drawing in foundation steel cushion cap and girder-holding structure junction, this girder-holding structure can improve the resistance to plucking effect of foundation steel cushion cap and girder-holding structure junction, girder-holding structure and frame roof beam form the atress whole, can effectively resist the overturning force of tower crane, ensure the support stability of foundation steel cushion cap, the safety in utilization of tower crane has been guaranteed.
As a preferred embodiment of the present invention, as shown in fig. 3 to 5, the construction girder-holding structure 21 further includes:
providing a beam top support 213, placing the beam top support 213 on the top of the frame beam 11, and reserving a set distance between the beam top support 213 and the beam column node 13;
providing a beam bottom support 214, wherein the beam bottom support 214 is attached to the bottom of the frame beam 11 and is arranged corresponding to the beam top support 213;
the tie bars 215 are provided, the tie bars 215 are attached to two sides of the frame beam 11, one end of each tie bar 215 is fixedly connected with the beam bottom support 214, the other end of each tie bar 215 penetrates through a floor slab at the top of the frame beam 11 and is fixedly connected with the beam top support 213, and the tie bars 215 are fastened so that the beam top support 213 and the beam bottom support 214 are clamped and fixed on the frame beam 11. The tie bars 215 penetrate through the floor slab, and the connection strength of the tie bars 215 can be further improved through the floor slab, so that the structural strength of the girder holding structure 21 is improved. When the girder holding structure 21 is installed, holes are drilled in the floor plates on two sides of the frame girder 11 corresponding to the setting positions of the tie bars 215, and the tie bars 215 correspondingly penetrate through the drilled holes, so that the girder top support 213 and the girder bottom support 214 of the frame girder 11 can be fastened and connected through the floor plates. The top of the roof support 213 forms a corresponding mounting surface 211, and the foundation steel cap 22 is mounted on top of the roof support 213 when the foundation steel cap 22 is mounted.
As another preferred embodiment of the present invention, when the girder-holding structure 21 is constructed, the girder-holding structure 21 is constructed at the cross joint near the frame girder 11, so that the girder-holding structure 21 forms the mounting surface 211 corresponding to the corner of the foundation steel deck 22. The cross joint and the beam column joint 13 are the same joint, the four frame beams 11 are arranged in a cross shape, so that a beam holding structure 21 is installed on each frame beam 11, the beam holding structure 21 is arranged at four corners of a square, mounting surfaces 211 of the beam holding structure 21 are correspondingly arranged at the four corners of the square, and a mounting foundation is provided for a basic steel bearing platform 22.
As still another preferred embodiment of the present invention, as shown in fig. 1 and 3, the mounting of the foundation-steel deck 22 on the mounting surface 211 includes:
providing a steel member 221, and placing the end of the steel member 221 on the corresponding mounting surface 211 and fixedly connecting with the mounting surface 211;
the end of one of the two adjacent steel members 221 is passed through the end of the other steel member and the two adjacent steel members are fixedly connected, thereby forming a base steel cap by enclosing the steel members. The plurality of steel members 221 are spliced end to end and enclosed to form the base steel bearing platform 22, and the base steel bearing platform 22 is of a square frame structure. After the end part of one steel member passes through the end part of the other steel member, welding and fixing are carried out at the joint of the two steel members, and the top surfaces of the two adjacent steel members are arranged in a flush way. Further, as shown in fig. 9 to 10, the steel member 221 is made of i-steel, a plurality of stiffening ribs 222 are provided in the middle of the steel member 221, the stiffening ribs 222 are vertically attached to the web plate and the upper and lower flange plates of the i-steel, and the support strength of the i-steel is improved by the provision of the stiffening ribs 222. Referring to fig. 1, a mount 31 is mounted on the base steel platform 22, and the mount 31 is mounted in the middle of the steel member 221, that is, in a position on the steel member 221 where the stiffening rib 222 is correspondingly disposed, the steel member 221 provides a strong support for the mount 31. Further, as shown in fig. 11, when the two steel members 221 are in butt joint connection, the upper flange plate and the lower flange plate of the first steel member are cut off to form a section to accommodate the grooves of the upper flange plate and the lower flange plate of the second steel member, the web plate of the first steel member is provided with a web through groove corresponding to the second steel member, the web plate of the second steel member is divided into two parts by the through groove, the web plate of the first steel member is placed in the through groove, the web plate of the first steel member is abutted against two sides of the web plate of the second steel member and is arranged in the grooves formed in the upper flange plate of the first steel member, the bottom of the joint of the two upper flange plates is provided with welding rods 223 to realize the fixed connection of the upper flange plates of the first steel member and the second steel member, the lower flange plate of the second steel member is placed in the grooves formed in the lower flange plate of the first steel member, and the top of the joint of the two lower flange plates is provided with welding rods 223 to realize the fixed connection of the first steel member and the lower flange plate of the second steel member.
As still another preferred embodiment of the present invention, when the girder-holding structure 21 is constructed, the girder-holding structure 21 is formed with a supporting surface 212 at the bottom of the frame girder 11;
diagonal bracing 23 is provided and connects diagonal bracing 23 between the support surface 212 and the floor at the bottom of the frame column 12. The diagonal support force is provided for the girder-holding structure 21 by the diagonal support 23. The diagonal bracing 23 forms an effective force transfer system, avoids the oversized deformation of the upper concrete frame beam 11 and increases the bearing capacity of the upper concrete frame beam 11, the diagonal bracing 23 is supported in four directions and the bottoms thereof are converged at one point, compared with the traditional four independent vertical bracing, under the load action of the upper tower crane, the diagonal bracing 23 can bear more balanced force, and the mutual restriction action between the diagonal bracing is increased. Preferably, the diagonal strut 23 is of i-steel. For the installation of being convenient for the batter post support to and improve the stability of transferring power of batter post support 23, set up in the junction of frame roof beam 11' and frame post 12 and hold pedestal 24, should hold pedestal 24 and set up around frame post 12, hold pedestal 24 and alternate fixed connection by a plurality of I-steel and form, the cushion cap pedestal 24 fixed connection is on the floor of frame post 12 bottom department, supports batter post support 23 together through frame post 12 and floor, forms stable atress whole, provides powerful support for embracing beam structure 21.
The present invention has been described in detail with reference to the embodiments of the drawings, and those skilled in the art can make various modifications to the invention based on the above description. Accordingly, certain details of the illustrated embodiments are not to be taken as limiting the invention, which is defined by the appended claims.
Claims (6)
1. The utility model provides a hold beam type tower crane foundation steel cushion cap which characterized in that includes:
the beam holding structure is arranged on a frame beam of the existing structure and is close to a beam column joint of the frame beam and the frame column, the beam holding structure penetrates through parts of the floor slab, which are positioned on two sides of the frame beam, and is clamped and fastened on the frame beam, and a mounting surface is formed on the top of the frame beam by the beam holding structure; and
installing and fixing a basic steel bearing platform on the installation surface; the beam holding structure comprises a beam top support arranged at the top of the frame beam, a beam bottom support attached to the bottom of the frame beam and tie bars attached to two sides of the frame beam;
a set distance is reserved between the beam top support and the beam column joint;
the beam bottom support is arranged corresponding to the beam top support;
one end of the tie bar is fixedly connected with the beam bottom support, the other end of the tie bar penetrates through a floor slab at the top of the frame beam and is fixedly connected with the beam top support, and the tie bar is fastened so that the beam top support and the beam bottom support are clamped and fastened on the frame beam; the beam holding structure is arranged close to a cross joint of the frame beam, so that a mounting surface corresponding to the corner of the basic steel bearing platform is formed through the beam holding structure; the base steel bearing platform comprises a plurality of steel members, wherein the end parts of the steel members are arranged on corresponding mounting surfaces and are fixedly connected with the mounting surfaces, and the end part of one of the two adjacent steel members passes through the end part of the other steel member and is fixedly connected with the two adjacent steel members, so that the base steel bearing platform is formed by enclosing the steel members; the device also comprises a diagonal column support;
the beam holding structure is characterized in that a supporting surface is formed at the bottom of the frame beam, and the inclined column supports are connected with the supporting surface and the floor slab at the bottom of the frame column in an inclined supporting manner.
2. A method of constructing a steel platform for a girder-holding tower crane foundation as claimed in claim 1, comprising the steps of:
constructing a beam holding structure on a frame beam of an existing structure at a beam column joint close to the frame beam and the frame column, enabling the beam holding structure to penetrate through parts, located on two sides of the frame beam, of a floor slab and clamp and fix the parts on the frame beam, wherein a mounting surface is formed on the top of the frame beam by the beam holding structure; and
and installing a foundation steel bearing platform on the installation surface, and arranging the foundation steel bearing platform on the corresponding installation surface and connecting and fixing the foundation steel bearing platform with the installation surface, thereby completing the construction of the foundation steel bearing platform of the girder-holding tower crane.
3. The method of constructing a girder-holding tower crane foundation steel deck according to claim 2, wherein constructing the girder-holding structure further comprises:
providing a beam top support, placing the beam top support at the top of the frame beam, and reserving a set distance at the joint of the beam top support and the beam column;
providing a beam bottom support, attaching the beam bottom support to the bottom of the frame beam and arranging the beam bottom support corresponding to the beam top support;
providing a tie bar, attaching the tie bar to two sides of the frame beam, fixedly connecting one end of the tie bar with the beam bottom support, penetrating the floor slab at the top of the frame beam through the other end of the tie bar and fixedly connecting the tie bar with the beam top support, and fastening the tie bar so that the beam top support and the beam bottom support are clamped and fastened on the frame beam.
4. A method of constructing a steel platform of a girder-holding tower crane according to claim 2 or 3, wherein the girder-holding structure is constructed by selecting a cross joint near the frame girder, so that a mounting surface corresponding to the corner of the steel platform is formed by the girder-holding structure.
5. A method of constructing a steel platform for a girder-holding tower crane according to claim 2, wherein the step of installing the steel platform on the installation surface comprises:
providing a steel member, and placing the end part of the steel member on a corresponding mounting surface and fixedly connecting the end part with the mounting surface;
and (3) penetrating the end part of one steel member of the two adjacent steel members through the end part of the other steel member and fixedly connecting the two adjacent steel members, so that a basic steel bearing platform is formed by enclosing the steel members.
6. The construction method of a girder-holding tower crane foundation steel bearing platform according to claim 2, wherein when constructing a girder-holding structure, the girder-holding structure is formed with a supporting surface at the bottom of the frame girder;
and providing a diagonal support, and connecting the diagonal support to the supporting surface and the floor at the bottom of the frame column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710303428.7A CN107419740B (en) | 2017-05-03 | 2017-05-03 | Steel bearing platform of beam-holding tower crane foundation and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710303428.7A CN107419740B (en) | 2017-05-03 | 2017-05-03 | Steel bearing platform of beam-holding tower crane foundation and construction method thereof |
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| Publication Number | Publication Date |
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| CN107419740A CN107419740A (en) | 2017-12-01 |
| CN107419740B true CN107419740B (en) | 2023-05-02 |
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| CN114045861B (en) * | 2021-11-24 | 2022-06-14 | 北京市第三建筑工程有限公司 | Tower crane foundation connecting structure transferring force to existing column and construction method thereof |
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| KR20050024781A (en) * | 2003-09-04 | 2005-03-11 | 이창남 | reinforcing method using forced knee brace between column and girder |
| CN105401585A (en) * | 2015-11-24 | 2016-03-16 | 中国建筑第八工程局有限公司 | Structure for supporting tower crane through foundation pit supporting system and construction method of structure |
| CN205296173U (en) * | 2015-11-24 | 2016-06-08 | 中国建筑第八工程局有限公司 | Utilize structure of foundation ditch support system bearing tower crane |
| CN106088131A (en) * | 2016-06-15 | 2016-11-09 | 中国建筑第八工程局有限公司 | Armored concrete cross tower crane and construction method thereof |
| CN205934955U (en) * | 2016-08-10 | 2017-02-08 | 中建八局第四建设有限公司 | Steel cushion cap formula tower crane foundation |
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2017
- 2017-05-03 CN CN201710303428.7A patent/CN107419740B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050024781A (en) * | 2003-09-04 | 2005-03-11 | 이창남 | reinforcing method using forced knee brace between column and girder |
| CN105401585A (en) * | 2015-11-24 | 2016-03-16 | 中国建筑第八工程局有限公司 | Structure for supporting tower crane through foundation pit supporting system and construction method of structure |
| CN205296173U (en) * | 2015-11-24 | 2016-06-08 | 中国建筑第八工程局有限公司 | Utilize structure of foundation ditch support system bearing tower crane |
| CN106088131A (en) * | 2016-06-15 | 2016-11-09 | 中国建筑第八工程局有限公司 | Armored concrete cross tower crane and construction method thereof |
| CN205934955U (en) * | 2016-08-10 | 2017-02-08 | 中建八局第四建设有限公司 | Steel cushion cap formula tower crane foundation |
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| CN107419740A (en) | 2017-12-01 |
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