CN114508168A

CN114508168A - Green assembled concrete prefabricated part and preparation method thereof

Info

Publication number: CN114508168A
Application number: CN202210036758.5A
Authority: CN
Inventors: 颜廷鹏; 彭宇; 徐爱民; 王鹏程; 胡亚琦
Original assignee: Suzhou Jietong Building Industry Co ltd
Current assignee: Suzhou Jietong Building Industry Co ltd
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-05-17
Anticipated expiration: 2042-01-13
Also published as: CN114508168B

Abstract

The invention discloses a green assembly type concrete prefabricated part which comprises a lower side edge beam, a balcony board and an upper side edge beam, wherein the balcony board and the lower side edge beam are integrally poured to form a bottom module; the lower side edge beam and the upper side edge beam are fixedly locked with the internal thread sleeve through connecting bolts penetrating through the connecting through holes and are fixedly bonded with the internal thread sleeve through connecting reinforcing steel bars extending into the reinforcing steel bar inserting holes; and a template is built on the template platform to prepare a bottom module and an upper side beam, the bottom module and the upper side beam are prepared in an inverted mode, and the bottom module and the upper side beam are conveyed to a construction site to be assembled for use. The invention is easy to store and prepare, and has low mould cost and high efficiency.

Description

Green assembled concrete prefabricated part and preparation method thereof

Technical Field

The invention relates to the technical field of assembly type buildings, in particular to a green assembly type concrete prefabricated part and a preparation method thereof.

Background

The prefabricated building is a means of producing beam, wall plate, laminated floor slab, stairs, balcony and other parts in a factory, then transporting the parts to a construction site, and assembling the parts to form a house building.

In existing residential buildings, the design floor height of the residence is typically between 2.8-3.0 m. At present, overhanging type balconies are adopted, and because the cross section of the outrigger at the bottom of the balcony is large in height, the lighting of the balcony is shielded, so that the adoption capability of the building is greatly influenced, and the energy-saving concept of the building is not met. In order to improve the defect and achieve the effect of building energy saving, a method often adopted in design is to place the balcony slab at the middle position of the cantilever beam, so that the cantilever beam is ensured to have enough section height to meet the requirement of structural bearing capacity, and meanwhile, the best lighting effect is obtained, and the using function and the energy saving requirement of the building are met.

However, the balcony slab is designed in the middle of the cantilever beam, so that the irregularity of the prefabricated balcony structure of the assembly type is directly aggravated, and the vertical section is in a T shape, so that the balcony slab cannot be formed on a die table, a steel die with a special-shaped structure needs to be customized firstly, then the prefabricated balcony is prepared, and the die cost is greatly increased. Meanwhile, as the components are irregular and the die table cannot be effectively used, the quality of the prefabricated balcony preparation is generally poor, and the requirements of detection and acceptance cannot be met. In addition, the prefabricated balcony of dysmorphism structure, it piles up and transports to the on-the-spot in-process of engineering in the mill, piles up the difficulty and cause concrete crack and damage very easily, if adopt singly to put, then it is big and cost of transportation greatly increased to occupy the area of site. Therefore, it is necessary to solve the engineering problem to meet the development requirement of building industrialization.

Disclosure of Invention

The invention aims to provide a green assembly type concrete prefabricated part and a preparation method thereof, which are easy to store and prepare, low in mold cost and high in efficiency.

In order to solve the technical problem, the invention provides a green fabricated concrete prefabricated part which comprises a lower side edge beam, a balcony board and an upper side edge beam, wherein the balcony board and the lower side edge beam are integrally poured to form a bottom module, the surface of the balcony board is flush with the surface of the lower side edge beam, the surface of the lower side edge beam is provided with a rib inserting hole and a lock hole, an internal thread sleeve is pre-embedded in the lock hole, the upper side edge beam corresponding to the internal thread sleeve is provided with a connecting through hole, and the bottom of the upper side edge beam corresponding to the rib inserting hole is provided with a connecting steel bar;

and the lower side edge beam and the upper side edge beam penetrate through the connecting through hole through the connecting bolt to be fixedly locked with the internal thread sleeve and extend into the steel bar inserting hole through the connecting steel bar to be fixedly bonded.

Furthermore, still be provided with between downside boundary beam and the upside boundary beam and sit the thick liquid layer, it stretches into the downthehole fixed material of using of bonding of dowel to sit the material that the thick liquid layer used and connecting reinforcement is the thick liquid.

Furthermore, a positioning bottom plate is arranged at one end, located on the surface of the upper side beam, of the lock hole, a limiting hole communicated with the lock hole is formed in the middle of the positioning bottom plate, and a plurality of upright post positioning holes are further formed in the periphery of the surface of the positioning bottom plate.

Furthermore, the setting height of the positioning bottom plate is smaller than the surface height of the upper side beam, and an embedded groove is formed between the surface of the positioning bottom plate and the surface of the upper side beam.

Furthermore, the inner wall of the limiting hole is provided with threads for mounting a hanging ring.

Furthermore, a fence or a ridge wall is arranged on the upper surface of the upper side edge beam.

A preparation method is used for preparing any one of the balcony structures, a template is built on a template platform to prepare a bottom module and an upper side beam, the bottom module and the upper side beam are prepared in an inverted mode, and the bottom module and the upper side beam are conveyed to a construction site to be assembled for use;

in the preparation process of the bottom module, the built template comprises a square outer template and a C-shaped inner template, the square outer template is fixed on the surface of a template platform, then a reinforcement cage is bound in the square outer template and an embedded part is installed, then the C-shaped inner template is hoisted into the C-shaped inner template and is fixed through a hanger, and finally two ends of the C-shaped inner template and the corresponding inner surface of the square outer template are locked and installed; pouring first concrete after the construction is finished, pouring the first concrete to the bottom surface of the C-shaped inner template, and pouring second concrete in a space formed by matching the square outer template and the C-shaped inner template after the first concrete is initially set to finish the pouring; and obtaining the finished module after the mould is removed and maintained.

Furthermore, the square-shaped outer template comprises four outer peripheral side templates which are sequentially connected, wherein one outer peripheral side template is fixedly connected with the C-shaped inner template and is defined as a rear die, and the rear die is fixedly integrated with the other three outer peripheral side templates and is fixed with the C-shaped inner template after the hanger is installed.

Further, the C style of calligraphy inner formword is including the first side limit mould, corner mould and the second side limit mould that set gradually, the corner mould includes vertical column plate, vertical column plate front end is provided with 90 degrees mould angles, vertical column plate top is provided with first locking plate, two side surface lower parts of vertical column plate all are provided with the second locking plate, first side limit mould and second side limit mould tip all are provided with 45 degrees butt faces and butt on the side surface of vertical column plate, vertical column plate passes through first locking plate and second locking plate and first side limit mould and second side limit mould fixed connection, between the surface of first side limit mould and the 90 degrees mould angle surfaces and the cooperation forms the planishing face between the surface of second side limit mould and the 90 degrees mould angle surfaces.

Furthermore, limiting plates are further arranged on two side surfaces of the vertical column plate and used for assisting installation of the first locking plate and the second locking plate and controlling the flatness between the first side die and the second side die and the flatness between the first side die and the second side die are controlled by 90-degree die angles.

The invention has the beneficial effects that:

1. the invention solves the contradiction between the requirement of a special-shaped structure on the prefabricated balcony for obtaining better lighting performance and the difficulty in preparation, stacking and transportation due to the requirement of the special-shaped structure. The balcony with the special-shaped structure is divided into two parts which are relatively regular to be prepared and molded, and the assembly of the prefabricated balcony is realized through a mode of on-site rapid assembly. The prefabricated balcony of the invention also has an assembly function. Therefore, the surface of the bottom die block is provided with a flat surface, the bottom die block can be conveniently stacked, and the upper side beam can meet the stacking requirement, so that the requirement of a construction site is greatly reduced.

2. The special-shaped prefabricated balcony which is originally not suitable for stacking and transporting is divided into two regular parts with flat bottom surfaces, so that the special-shaped prefabricated balcony is convenient to prepare, stack and transport and is not easy to damage. And the assembly type connection is carried out after the split preparation, so that the requirement on the connection strength is met, and the quality of a balcony is ensured.

3. During split preparation, the bottom die block is skillfully arranged in an inverted manner, the member can be formed on the die table, the vibration of the die table can directly act on the concrete, the compactness inside the concrete is ensured, and meanwhile, the formed member has a flat surface and good apparent quality. In addition, the adopted auxiliary die is simple in structure, convenient to disassemble and assemble, and the overall preparation quality is greatly improved.

Drawings

FIG. 1 is a schematic view of the balcony structure of the present invention;

FIG. 2 is a schematic view of the bottom mold block structure of the present invention;

FIG. 3 is a schematic view of the top side sill bottom structure of the present invention;

FIG. 4 is a schematic structural view of a balcony mounting and positioning base plate according to the present invention;

FIG. 5 is a schematic view of a mold for preparing a bottom mold block according to the present invention;

FIG. 6 is a schematic view of the structure of the matching part of the square outer template and the C-shaped inner template;

FIG. 7 is a schematic diagram of a C-shaped inner template using a corner template according to an embodiment of the present invention;

FIG. 8 is a perspective view of a corner mold according to the present invention;

FIG. 9 is a schematic top view of the structure of FIG. 8 according to the present invention;

FIG. 10 is a schematic cross-sectional view of a C-shaped inner form using a corner form.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 1 to 4, one embodiment of the green fabricated concrete prefabricated part of the present invention includes a lower side beam 1, an anode plate 2 and an upper side beam 3, wherein the anode plate and the lower side beam are integrally cast, and are a bottom die block 4, the surface of a balcony slab is flush with the surface of the lower side beam, so as to facilitate preparation and stacking, the surface of the lower side beam is provided with a dowel hole 5 and a lock hole 6, an internal thread sleeve is pre-embedded in the lock hole for matching connection, the upper side beam corresponding to the internal thread sleeve is provided with a connection through hole for passing a connection bolt, and the bottom of the upper side beam corresponding to the dowel hole is provided with a connection steel bar for improving fixing strength;

specifically, the lower side beam and the upper side beam are fixed by the connecting bolt 7 penetrating through the connecting through hole to be locked with the internal thread sleeve and extending into the steel bar inserting hole through the connecting steel bar 8 to be bonded. In order to guarantee the intensity and the sealed effect of both connections, still be provided with between downside boundary beam and upside boundary beam and sit the thick liquid layer to the material and the connecting reinforcement that sit the thick liquid layer and use stretch into the downthehole fixed material that uses of bonding of dowel are to sit the thick liquid, the simple operation, and construction quality is stable. Of course, bar-planting glue can also be adopted during bonding.

When connecting bolt lock solid, in order to guarantee the validity of locking force, be provided with positioning bottom plate 9 in the lockhole is located one of upside boundary beam surface and serve, positioning bottom plate is pre-buried to be set up in the upside boundary beam, positioning bottom plate middle part is provided with the spacing hole 10 that link up with the lockhole, connecting bolt pass behind the spacing hole with internal thread sleeve threaded connection, adopt the nut to lock the bolt on positioning bottom plate surface afterwards can, after the locking, the effort shifts to upside boundary beam through pre-buried positioning bottom plate, reliable and stable. Still be provided with a plurality of stand locating holes 11 on the periphery on location bottom plate surface, when installing the rail on the upper surface of side roof beam, the stand locating hole acts as the locating hole use of punching, punches the lock solid through fixed point position and installs the stand, avoids punching the position harmfully to lead to the installation degree of difficulty to increase, has accurate installation, the effect of convenient construction. The positioning bottom plate is arranged to be less than the surface height of the upper side beam in height, an embedding groove is formed between the surface of the positioning bottom plate and the surface of the upper side beam, the stand column can be embedded into the surface of the upper side beam during installation, and the stand column can be subsequently filled through beautification treatment, so that the overall attractiveness is guaranteed.

Be provided with the screw thread on foretell spacing downthehole wall for the hoist and mount use of being convenient for of installation rings.

Can also build the bank wall on the upper surface of side rail on, satisfy diversified user demand.

The invention also provides a preparation method for preparing the balcony structure, and the balcony structure can be directly prepared on the mould platform (adopting the function of the mould platform) by decomposing the structure design, rather than using the mould platform as a bottom plane;

specifically, the bottom module and the upper side beam are prepared in an inverted mode, and then the bottom module and the upper side beam are conveyed to a construction site to be assembled for use;

the bottom module and the upper side beam are separately and independently prepared;

for the preparation of the bottom module, firstly, a square outer template 12 is built on a template table, four outer peripheral templates are sequentially connected, wherein one outer peripheral template is fixedly connected with a C-shaped inner template and defined as a post-installation template, the post-installation template is not installed at present, namely, three outer peripheral templates are installed, after the installation, a reinforcement cage is bound outside and hoisted into the three outer peripheral templates (of course, the reinforcement cage can be directly bound inside), an embedded part is fixed, then, the C-shaped inner template 13 is continuously assembled and spliced outside, then, the C-shaped inner template is hoisted into the square outer template, the C-shaped inner template is hoisted and fixed inside the square outer template through a hanger 15, the relative positions of the C-shaped inner template and the inner side of the square outer template are adjusted while the C-shaped inner template and the square outer template are fixed into a whole after the hanger is installed, as shown in figure 6, the post-installation template is fixed into a whole with the other three outer peripheral templates, and the die is fixed with the C-shaped inner die plate to form an integral stress effect, so that the building is completed, and the matching structure of the die is shown in figure 5.

In the process of binding the reinforcement cage, the extended reinforcement can be bound and positioned by adopting a rear die-filling mode, and the binding position precision is ensured. The rear die is not fixed with the three outer peripheral dies, and sufficient space for installing the C-shaped inner die plate is provided.

Pouring first concrete after the building is finished, pouring the first concrete to the bottom surface of the C-shaped inner template, wherein the height is the thickness of the balcony slab, and pouring second concrete in a space formed by matching the square outer template and the C-shaped inner template after the first concrete is initially set to finish the pouring; and after the belt is cured, the C-shaped inner template and the square-shaped outer template are disassembled, and the bottom module can be obtained after curing. Because the concrete needs to be poured for the second time after initial setting, the extension edge can be arranged on the outer side of the bottom of the C-shaped inner formwork, the size of the extension edge is set to be 5-10cm, the contact area between the bottom surface of the C-shaped inner formwork and the concrete is increased, the phenomenon that the concrete flows out from the position due to gravity during the second-time concrete pouring is avoided, the operation stability is better, and the time interval between the first-time pouring and the second-time pouring can be shortened.

Because the balcony slab is whole all with the contact of mould platform when pouring, at the in-process of pouring, the effect of directly can accomplishing the vibration through the vibration of mould platform, excellent in use effect, and need not to pour balcony slab frame back, mould cost greatly reduced, the finished product quality also improves greatly, can also tear the mould open in advance, realizes the effect that the mould has enough to meet the need fast.

The side sill on the side adopts the template to enclose and keep off formation concave character type structure when preparing, then ligature reinforcing bar and installation built-in fitting, afterwards through concrete placement can, easy operation, the mould is with low costs.

Referring to fig. 7 to 10, since the C-shaped inner form is a female mold and is easily disturbed and jammed during assembly and disassembly, the C-shaped inner form is designed to have a structure of a first side form 16, a corner form 17 and a second side form 18 which are connected in sequence, and has two corners, and two corner forms are adopted, that is, the structure of the first side form, the corner form, the second side form, the corner form and the first side form; the corner die comprises a vertical column plate 19, a 90-degree die angle 20 is arranged at the front end of the vertical column plate, a first locking plate 21 is arranged at the top of the vertical column plate, second locking plates 22 are arranged on the lower portions of two side surfaces of the vertical column plate, 45-degree butt faces 23 are arranged at the end portions of a first side die and a second side die and butt against the side surfaces of the vertical column plate, and the vertical column plate is fixedly connected with the first side die and the second side die through the first locking plate and the second locking plates.

When using, it is convenient externally to assemble, can realize connecting through the lock solid after the concatenation is in the same place, wherein, earlier with the 45 degrees butt face butt of first side limit mould on the side surface of vertical column slab, with the 45 degrees butt face butt of second side limit mould on the side surface of vertical column slab, ensure that the surface of first side limit mould flushes with 90 degrees mould angle surfaces after the butt to and the surface of second side limit mould flushes with 90 degrees mould angle surfaces, with the three lock solid after leveling, have two corner moulds repeat the installation can.

Because the surface is flushed the adjustment degree of difficulty and is big, consequently still design limiting plate 24 on two side surfaces of vertical column plate, after 45 degrees butt faces butt on the side surface of vertical column plate, its mounted position has been restricted to the limiting plate, can realize once assembling and can realize leveling the equipment and assemble the effect that targets in place, can assist first locking plate of installation and second locking plate, and can also control the roughness between first side mould 90 degrees mould angle and the second side mould.

The vertical column plate can be obtained by beveling and welding a metal plate, and is easy to prepare; when the formwork is disassembled, the hanging bracket is firstly disassembled, then the locking of the joint of the C-shaped inner formwork and the square-shaped outer formwork is removed, the square-shaped outer formwork is disassembled, then the locking of the corner formwork, the first side formwork and the second side formwork is removed, the first side formwork is then disassembled, the corner formwork is disassembled after the disassembly, and finally the second side formwork is disassembled.

The above embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims

1. A green fabricated concrete prefabricated part is characterized by comprising a lower side edge beam, a balcony board and an upper side edge beam, wherein the balcony board and the lower side edge beam are integrally poured to form a bottom module, the surface of the balcony board is flush with the surface of the lower side edge beam, the surface of the lower side edge beam is provided with a dowel hole and a lock hole, an internal thread sleeve is pre-embedded in the lock hole, the upper side edge beam corresponding to the internal thread sleeve is provided with a connecting through hole, and the bottom of the upper side edge beam corresponding to the dowel hole is provided with a connecting steel bar;

2. The green fabricated concrete precast element according to claim 1, wherein a mortar layer is further disposed between the lower side beams and the upper side beams, and both a material used for the mortar layer and a material used for bonding and fixing the connecting steel bars extending into the steel bar inserting holes are mortar.

3. The green fabricated concrete precast element according to claim 1, wherein a positioning bottom plate is provided at one end of the lock hole on the surface of the upper side beam, a limiting hole penetrating through the lock hole is provided at the middle of the positioning bottom plate, and a plurality of column positioning holes are further provided at the periphery of the surface of the positioning bottom plate.

4. The green fabricated concrete precast member according to claim 3, wherein the positioning bottom plate is provided at a height less than a surface height of the upper side sill, and an insertion groove is formed between the surface of the positioning bottom plate and the surface of the upper side sill.

5. The green fabricated concrete precast element according to claim 3, wherein the inner wall of the limiting hole is provided with a screw thread for installing a hanging ring.

6. The green fabricated concrete precast member according to claim 1, wherein a fence is installed or a gable is built on an upper surface of the upper side sill.

7. A preparation method for preparing the balcony structure as claimed in any one of claims 1 to 6, wherein a template is built on a formwork table to prepare a bottom module and an upper side beam, the bottom module and the upper side beam are prepared in an inverted manner, and the bottom module and the upper side beam are transported to a construction site to be assembled for use;

8. The green fabricated concrete precast element according to claim 1, wherein the square-shaped outer form includes four sequentially connected outer circumferential forms, one of which is fixedly connected to the C-shaped inner form and is defined as a rear set form, and the rear set form is integrally fixed to the remaining three outer circumferential forms and is fixed to the C-shaped inner form after the hanger is installed.

9. The green fabricated concrete precast element according to claim 1, wherein the C-shaped inner mold plate comprises a first side form, a corner form and a second side form which are sequentially arranged, the corner die comprises a vertical column plate, the front end part of the vertical column plate is provided with a 90-degree die angle, the top of the vertical column plate is provided with a first locking plate, the lower parts of two side surfaces of the vertical column plate are provided with second locking plates, the end parts of the first side die and the second side die are provided with 45-degree abutting surfaces and abut against the side surfaces of the vertical column plates, the vertical column plate is fixedly connected with the first side edge formwork and the second side edge formwork through the first locking plate and the second locking plate, the surface of the first side die and the 90-degree die angle surface are matched with each other, and the surface of the second side die and the 90-degree die angle surface are matched with each other to form a flat surface.

10. The green fabricated concrete precast element according to claim 9, wherein limiting plates are further provided on both side surfaces of the vertical column plate, the limiting plates being used to assist installation of the first locking plate and the second locking plate and to control a 90-degree mold angle of the first side form and flatness between the second side forms.