CN218090943U - Construction elevator foundation structure - Google Patents

Abstract

The utility model discloses a construction elevator foundation structure, structural wall post, RPC coincide thin layer back up coat, RPC thin layer back up coat including roof structure, supporting roof structure, RPC coincide thin layer back up coat constitutes RPC coincide thin layer back up coat with roof structure's structural slab, RPC thin layer back up coat constitutes RPC thin layer back up coat with roof structure's structural beam, be equipped with the fixing bolt spare of construction elevator base in the RPC coincide thin layer back up coat, be equipped with first reinforcing bar net, implantation in the RPC coincide thin layer back up coat first shear pin in the structural slab, be equipped with second reinforcing bar net, implantation in the RPC thin layer back up coat second shear pin in the structural beam, the opening reinforcing stirrup of second reinforcing bar net is implanted the structural slab is interior. The whole construction elevator foundation structure is supported on the top plate, so that the reliability of the original structure can be ensured, and the construction requirement can be met.

Description

Construction elevator foundation structure

Technical Field

The utility model belongs to the technical field of the construction, especially, relate to a construction elevator foundation structure.

Background

In the construction process of the existing building, a construction elevator is used as a main machine for vertically transporting a super high-rise building and a high-rise building. The construction elevator foundation is generally a concrete cast-in-place structure, and the general setting mode is as follows: (1) the construction elevator foundation is arranged on the top plate structure plate surface, and a temporary support structure is arranged below the top plate; (2) the foundation of the construction elevator is arranged on the basement bottom plate structure, and the standard knot penetrates through the layer-by-layer structural plates. And after the construction elevator is used and removed, the construction elevator foundation and the temporary supporting structure are required to be processed, and the hole is required to be closed.

The mode of setting up that adopts more than, owing to set up temporary support under seting up hole or the structural slab, influence alternate construction and construction progress adjustment, and then the influence is checked in advance and is accepted and the function is used the room and put into use in advance, and especially the pipeline equipment of basement is many, the construction is complicated, is unfavorable for the management and control in the aspects such as the progress of project, cost.

At present, in order to solve the above-mentioned influence problem and greatly improve the bearing capacity of the structure, the existing research and processing mode is as follows: (1) directly modifying the design and increasing the section method; (2) externally adhering profile steel on the surface below the structure; (3) a steel structure assembly type foundation is added on the structural plate; (5) and underpinning the foundation of the construction elevator.

The above research treatment method still has the following disadvantages: (1) the method of directly increasing the section occupies the internal use space; (2) the external bonding steel method is difficult to dismantle after the subsequent construction is finished, and the risk of equipment damage caused by falling exists; (3) the steel structure assembly type foundation is difficult to finalize and reuse; (5) the foundation of the construction elevator is underpinned, so that serious safety risks exist, and production safety management is not facilitated.

The ultra-high performance reactive powder concrete (hereinafter abbreviated as RPC) has the compressive strength of 100-800 MPa, has the advantages of ultra-high strength, ultra-high toughness, ultra-high durability, environmental protection of raw materials, good construction performance of mixtures and the like, and has indexes of impermeability, frost resistance, carbonization resistance and the like which are several times higher than those of common concrete. The RPC doped with the steel fiber and the high-strength steel bar are compounded to form a thin layer for reinforcement, so that the bearing capacity of a concrete structure can be greatly improved, the section rigidity and the deformation resistance are improved, and the development of concrete cracks is effectively inhibited. Therefore, in order to solve the problems and the defects of the existing research, the RPC material is applied to the structural reinforcement of the installation area of the construction elevator and the like, so that the reliability of the original structure is ensured, the construction requirement is met, and the strategic targets of energy conservation, emission reduction, low carbon and environmental protection in the modern society are better met.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a construction elevator foundation structure aims at effectively solving the influence problem that current construction elevator basis set up the construction.

Therefore, the embodiment of the utility model provides a construction elevator foundation structure, including roof structure, the structural wall post of supporting the roof structure, RPC coincide thin layer back up coat, RPC coincide thin layer back up coat sets up on the structural slab of roof structure, with the structural slab constitutes coincide RPC thin layer back up coat, RPC thin layer back up coat sets up on the structural beam of roof structure, with the structural beam constitutes RPC thin layer back up coat, be equipped with the fixing bolt spare of construction elevator base in the RPC coincide thin layer back up coat, be equipped with first reinforcing steel bar net, implantation in the RPC coincide thin layer back up coat first shearing pin in the structural slab, be equipped with second reinforcing steel bar net, implantation in the RPC thin layer back up coat second shearing pin in the structural beam, the opening reinforcing stirrup of second reinforcing steel bar net is implanted in the structural slab.

Specifically, the first shear pin and the second shear pin are both straight hook type ribbed short steel bars.

Specifically, a binding surface subjected to scabbling treatment or a binding surface directly coated with an interface agent is arranged between the structural beam and the RPC thin-layer reinforcing layer.

Specifically, the thickness of the RPC thin layer reinforcing layer is 20-40mm.

Specifically, a binding surface subjected to scabbling treatment or a binding surface directly coated with an interface agent is arranged between the top plate and the RPC laminated thin-layer reinforcing layer.

Specifically, the fixing bolt pieces of the construction elevator base are embedded into the structural plate by using structural adhesives.

Specifically, the thickness of the RPC laminated thin-layer reinforcing layer is 20-40mm.

Specifically, the first reinforcing mesh reinforcement includes a first longitudinal reinforcing bar and a transverse reinforcing bar arranged in a bidirectional (double-layer) manner. The first reinforcing mesh reinforcement is secured in a plurality of first shear pins arranged in a quincunx pattern along the reinforcing section of the structural panel.

Specifically, the second reinforcing steel bar mesh comprises a plurality of second longitudinal steel bars arranged in parallel with the longitudinal direction of the structural beam and open reinforcing stirrups arranged in parallel with the cross-sectional direction of the structural beam. The second reinforcing mesh reinforcement is bound and fixed to a second shear pin which is arranged in a quincunx pattern along the reinforcing region of the structural beam.

Specifically, the roof structure is a basement roof structure.

Compared with the prior art, the utility model discloses at least one embodiment has following beneficial effect: through add the RPC back up coat on the structural slab and the structural beam at original roof structure, and set up reinforcing bar and shear pin in the RPC back up coat, reach the purpose that increases substantially secret basement roof and structural beam bearing capacity, and directly utilize the original structural column of basement as the main bearing member of construction elevator, structural slab after reinforcing passes the load to the structural beam after reinforcing, transmit to the structural wall post by the structural beam again on, whole construction elevator foundation structure direct bearing is on the roof structure, do not occupy roof below usage space, not only can ensure the safe and reliable of original structure, can satisfy the demand of construction again, and the RPC back up coat can regard as permanent structure's part, do not show to change the structure appearance and occupy the usage space.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a top view of a foundation structure of a construction hoist provided by the present invention;

FIG. 2 is a sectional view taken along line I-I of FIG. 1;

fig. 3 is a schematic view of basement roof reinforcement according to the present invention;

fig. 4 is a schematic view of the reinforcement of the structural beam according to the present invention;

wherein: 1. a structural panel; 2. a structural beam; 3. a structural wall stud; 4. RPC laminated thin layer reinforcing layer; 5. A fixing bolt member; 6. a first reinforcing mesh reinforcement; 601. transverse reinforcing steel bars; 602. a first longitudinal reinforcement; 7. A first shear pin; 8. RPC thin layer reinforcing layer; 9. a second reinforcing mesh reinforcement; 901. opening reinforcing stirrups; 902. a second longitudinal reinforcement; 10. a second shear pin.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and to simplify the description, but 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.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1 to 4, a foundation structure of a construction hoist includes a roof structure, structural wall pillars 3 supporting the roof structure, and RPC laminated thin layer reinforcementLayer 4, RPC thin layer reinforced layer 8 _， The RPC thin laminated reinforcing layer 4 is arranged on a structural plate 1 of a top plate structure and forms an RPC thin laminated reinforcing plate with the structural plate 1, the RPC thin laminated reinforcing layer 8 is arranged on a structural beam 2 of the top plate structure and forms an RPC thin laminated reinforcing beam with the structural beam 2, a fixing bolt piece 5 used for being connected with a base of a construction elevator is arranged in the RPC thin laminated reinforcing plate, a first reinforcing steel bar net 6 is arranged in the RPC thin laminated reinforcing layer 4, a first shearing pin 7 implanted into the structural plate 1 is arranged in the first reinforcing steel bar net 6, a second reinforcing steel bar net 9 is arranged in the RPC thin laminated reinforcing layer 8, a second shearing pin 10 implanted into the structural beam 2 is fixedly arranged on the second reinforcing steel bar net 9, and two ends of an opening reinforcing hoop bar 901 of the second reinforcing steel bar net 9 are implanted into the structural plate 1. It should be noted that the roof structure may be a basement roof structure, a skirt building roof structure, or other roof structures.

In this embodiment, through add RPC coincide thin layer back up coat 4 and RPC thin layer back up coat 8 on structural slab 1 and the structure roof beam 2 of original roof respectively to set up reinforcing bar net and shear pin in the back up coat, utilize RPC, the structure of reinforcing bar net and shear pin constitution, realize consolidating the structural slab 1 and the structure roof beam 2 of original roof, the bearing capacity of original structure itself is excavated to the degree of depth, its bearing capacity is increased substantially, and directly utilize original structure wall post 3 as the main load-transferring's of construction elevator load-bearing member. The load is transmitted to the reinforced structural beam 2 through the structural plate 1 of the reinforced top plate and then transmitted to the structural wall column 3 through the structural beam 2, the whole construction elevator foundation structure is directly supported on the top plate, the use space of the top plate is not occupied, the reliability of the original structure can be ensured, the construction requirement can be met, and the RPC reinforcing layer can be used as a part of a permanent structure and does not remarkably change the structural appearance and occupy the use space.

It can be understood that, in order to improve the bonding strength of the thin reinforcing layer to the original structure before reinforcement: (1) the joint surfaces of the structural beam 2 and the RPC thin-layer reinforcing layer 8 and the joint surfaces of the structural plate 1 and the RPC laminated thin-layer reinforcing layer 4 are both rough surfaces, or an interface bonding agent is coated on the surface of the structure; (2) the shear pins are arranged in a quincunx shape in the reinforcing area. In practical application, the RPC laminated thin-layer reinforcing layer 4 and the RPC thin-layer reinforcing layer 8 have the thickness of 20-40mm.

Referring to fig. 3 and 4, in particular, the first reinforcing steel bar net 6 comprises a transverse steel bar 601 and a first longitudinal steel bar 602 which are arranged in a bidirectional (double-layer) manner, the transverse steel bar 601 and the first longitudinal steel bar 602 are bound at an intersection, the second reinforcing steel bar net 9 comprises a plurality of open reinforcing stirrups 901 which are arranged in parallel with the cross section of the structural beam 2 and a plurality of second longitudinal steel bars 902 which are arranged in parallel with the length direction of the beam, and the second longitudinal steel bars 902 are bound and fixed with the open reinforcing stirrups 901 at the intersection. The first reinforcing steel bar net is bound and fixed with the first shear pin 7 and the second reinforcing steel bar net is bound and fixed with the second shear pin 10.

Referring to fig. 1 to 4, the construction process of the foundation structure of the construction elevator is as follows:

the method comprises the following steps of firstly, inspecting and accepting an original structure so as to comprehensively know the current situation of the structure or the component.

And step two, designing and checking calculation according to the load of the construction hoist, the current situation of the original structure, the analysis method of the reinforced structure, the material performance, the current national standard and the like. Meanwhile, the reinforcement construction has professional qualifications, a special construction scheme is required to be compiled, and technical personnel engaged in operation are required to follow the management regulations related to safety and quality after special training.

And step three, cleaning the top plate and upper and lower materials or sundries, fully unloading loads, building a reliable safety protection system and a working platform under the top plate during reinforcement, and enclosing the range of a safety area by adopting a temporary shaping protection rail on the structural plate surface.

Step four, reinforcing the structural beam thin layer of the top plate in the reinforcing area:

1. surface treatment of the structural beam; roughening the surface, and forming crossed strip-shaped grooves or plum blossom-shaped pits on the surface of the original component after roughening; washing the surface of the base layer by high-pressure water flow or a high-pressure air gun, and keeping the surface dry and clean; if the interface agent is adopted for processing, the interface bonding quality should be inspected on site after the coating.

2. Implanting a shear pin: the ribbed short reinforcing steel bar can strengthen the shear deformation, sliding or stripping resistance between the reinforcing thin layer and the original structural surface, and improve the common working performance. Adopting a percussion drill to form a hole and timely removing dust and debris in the hole, and adopting blowing to form a ball or blowing to clean by a high-pressure air gun; fixing the pin by the structural adhesive, and carrying out a field drawing test after the structural adhesive is cured to ensure that the structural adhesive meets the requirements of design and national standard; the diameter, length, shape, reinforcing steel bar material, the concrete embedding depth of the pin, structural adhesive and the like of the pin meet the design requirements.

3. Manufacturing and installing a reinforcing mesh: blanking and manufacturing a steel bar according to a design drawing, binding or welding the surface of the structural beam to form a mesh, fixing the mesh with the shear pin, implanting two ends of the opening reinforcing stirrup into the structural plate, and implanting the opening reinforcing stirrup and the shear pin into the structural plate. The distance between the reinforcement stirrups is reduced, so that the anti-seismic effect can be effectively provided.

4. RPC construction: the RPC material is prepared by the following steps: (1) preparing multiple components on site; (2) the dry mixture and the liquid are prepared on site, the mode (2) is mostly adopted at present, and the metering is accurate and the preparation is convenient. The construction method comprises the following steps: (1) pouring in a traditional mode; (2) extruding; (3) the mode (3) is adopted in the elastic coating, the manufacturing, the installation of a template, the erection of a supporting scaffold and the like are not needed, the construction difficulty is reduced, only special movable and portable mechanical equipment is equipped, the pressure and the time are adjusted, and the elastic coating has the advantages of simplicity and convenience in construction, high efficiency and the like. The requirements of elastic coating are as follows: the elastic coating is preferably selected at intervals, the elastic coating points are uniformly and dispersedly arranged, and the next elastic coating construction of the interval part of two adjacent points is carried out after initial setting.

5. RPC maintenance: the RPC thin-layer reinforcing layer can be maintained by spraying or laminating, and the maintenance temperature is not lower than 10 ℃.

Step five, fixing a bolt piece on a base of the construction elevator for construction: according to the requirement of a construction elevator basic drawing and the distance requirement between an elevator car and a structural outer wall or an upper platform, the construction elevator is positioned, and the construction of fixing bolt pieces and the construction of implanting shearing pins are performed.

Step six, reinforcing the structural plate superposed thin layer of the top plate in the reinforcing area:

1. the surface treatment of the structural slab, the implantation of the shear pins, the manufacturing and installation of the reinforced reinforcing mesh, the preparation mode of the RPC material and the maintenance and construction method of the RPC 8 are all consistent with the RPC reinforced layer on the structural beam.

2. RPC construction: the RPC on the board surface is mostly poured in a traditional mode, and a template needs to be manufactured and installed to enclose a reinforced area.

3. If the calculated thickness of the top plate does not meet the requirement of the construction elevator foundation, the construction elevator foundation can be thickened by an upper thin layer alone, or the upper part and the bottom of the top plate can be thickened simultaneously.

And seventhly, inspecting and accepting the concrete structure. Except that the original structure needs to meet the requirements of construction acceptance criteria, technical rules, detection technical standards and the like before reinforcement, the original structure also needs to meet the requirements of corresponding detection technical standards, technical rules, reinforcement acceptance criteria and the like in the reinforcement process and after reinforcement, and RPC can be detected by adopting an ultrasonic wave and hammering method.

Any technical solution disclosed in the present invention is, unless otherwise stated, disclosed a numerical range if it is disclosed, and the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are many and cannot be exhaustive, the present invention discloses some numerical values to exemplify the technical solutions of the present invention, and the above-mentioned enumerated numerical values should not be construed as limiting the scope of the present invention.

Also, above-mentioned the utility model discloses if disclose or related to mutually fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding) can, of course, also be replaced by one-piece structures (e.g. manufactured in one piece using a casting process) (unless it is obvious that one-piece processes cannot be used).

In addition, the terms used in any technical aspect of the present disclosure as described above for indicating the positional relationship or the shape include the state or the shape similar, analogous or approaching thereto unless otherwise stated. The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.

The above examples are merely illustrative of the present invention clearly and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Nor is it intended to be exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.

Claims (8)

1. A construction elevator foundation structure characterized in that: including roof structure, structural wall post (3), RPC coincide thin layer back up coat (4), RPC thin layer back up coat (8) that support the roof structure, RPC coincide thin layer back up coat (4) set up on structural slab (1) of roof structure, with structural slab (1) constitutes RPC coincide thin layer back up coat, RPC thin layer back up coat (8) set up on structural beam (2) of roof structure, with structural beam (2) constitute RPC thin layer back up coat, be equipped with fixing bolt spare (5) of construction elevator base in the RPC coincide thin layer back up coat, be equipped with first reinforcement reinforcing bar net (6) in RPC coincide thin layer back up coat (4), implant first shear pin (7) in structural slab (1), be equipped with second reinforcement reinforcing bar net (9) in RPC thin layer back up coat (8), implant second shear pin (10) in structural beam (2), the opening reinforcement stirrup (901) of second reinforcing bar (9) are implanted in structural slab (1).

2. The construction elevator substructure of claim 1, wherein: and a bonding surface which is subjected to scabbling treatment or is directly coated with an interface agent is arranged between the structural beam (2) and the RPC thin-layer reinforcing layer (8).

3. The construction elevator substructure of claim 1, wherein: the thickness of the RPC thin layer reinforcing layer (8) is 20-40mm.

4. The construction elevator substructure of claim 1, wherein: and a bonding surface subjected to scabbling treatment or a bonding surface directly coated with an interface agent is arranged between the structural plate (1) and the RPC laminated thin-layer reinforcing layer (4).

5. The construction elevator substructure of claim 1, wherein: the fixing bolt pieces (5) are implanted into the structural plate (1) by adopting structural adhesive.

6. The construction elevator substructure of claim 1, wherein: the thickness of the RPC laminated thin-layer reinforcing layer (4) is 20-40mm.

7. The construction elevator substructure of claim 1, wherein: the first reinforcing mesh reinforcement (6) comprises transverse reinforcement bars (601) and first longitudinal reinforcement bars (602) arranged in a bidirectional or double layer.

8. The construction elevator substructure of claim 1, wherein: the second reinforcing mesh (9) comprises a plurality of open-ended reinforcing stirrups (901) arranged parallel to the cross-sectional direction of the structural beam (2), and a plurality of second longitudinal reinforcing rods (902) parallel to the longitudinal direction of the beam.

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