CN111305590A - Assembly type low-energy-consumption transformation structure and rapid transformation method for existing building balcony - Google Patents

Assembly type low-energy-consumption transformation structure and rapid transformation method for existing building balcony Download PDF

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Publication number
CN111305590A
CN111305590A CN202010149804.3A CN202010149804A CN111305590A CN 111305590 A CN111305590 A CN 111305590A CN 202010149804 A CN202010149804 A CN 202010149804A CN 111305590 A CN111305590 A CN 111305590A
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CN
China
Prior art keywords
balcony
existing building
energy
slab
consumption
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Pending
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CN202010149804.3A
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Chinese (zh)
Inventor
郝雨杭
赵士永
付素娟
时元元
崔少华
康熙
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Hebei Academy Of Architectural Sciences Co ltd
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Hebei Academy Of Architectural Sciences Co ltd
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Priority to CN202010149804.3A priority Critical patent/CN111305590A/en
Publication of CN111305590A publication Critical patent/CN111305590A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00Working measures on existing buildings
    • E04G23/02Repairing, e.g. filling cracks; Restoring; Altering; Enlarging

Abstract

The invention discloses an assembled low-energy-consumption reconstruction structure and a rapid reconstruction method for an existing building balcony, which comprises the following steps of measuring the size of an original balcony, prefabricating an integral balcony superposed beam and a superposed slab, erecting an external scaffold, dismantling the original balcony slab, a breast board, a window and the like, drilling a steel bar hole on an original girth beam construction column, installing a steel support piece, implanting ribs of the balcony slab into the beam of the original outer wall, connecting the prefabricated balcony slab and the steel support, solidifying the positions of the implanted ribs, pouring heat-insulation mortar on a balcony slab cast-in-place layer and a post-pouring connecting seam, connecting the balcony slab and the superposed beam by using angle steel, laying a waterproof layer by using a balcony ground method, and externally embedding and installing a high-efficiency energy-saving window; the invention solves the technical problems of high construction difficulty, easy generation of heat bridges, poor bearing capacity and the like of the transformation of the existing building balcony of an old residential area, can meet the heat bridge-free technology and meet the requirement of low energy consumption, and can realize quick installation, reduce the construction period, increase the construction speed and reduce the influence on the original normal living order.

Description

Assembly type low-energy-consumption transformation structure and rapid transformation method for existing building balcony
Technical Field
The invention relates to the technical field of building balcony transformation, in particular to an assembled low-energy-consumption transformation structure and a rapid transformation method for an existing building balcony.
Background
The energy-saving reconstruction construction site of the existing building is complex, and the traditional energy-saving reconstruction construction mode of the existing building cannot be completely suitable for low-energy-consumption reconstruction construction. The construction method suitable for low-energy-consumption transformation of the existing building is continuously searched, and meanwhile, transformation construction of the low-energy-consumption balcony of the existing building becomes a difficult problem of low-energy-consumption transformation nodes.
Based on the structure, the invention designs the fabricated low-energy-consumption reconstruction structure and the rapid reconstruction method for the balcony of the existing building, which can meet the requirements of the low-energy-consumption building, achieve the purpose of low-energy-consumption building heat-breaking bridge, shorten the construction period, avoid the influence on the indoor environment and the life of residents and solve the problems.
Disclosure of Invention
The invention aims to provide an assembled low-energy-consumption reconstruction structure and a rapid reconstruction method for a balcony of an existing building, and aims to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a low-energy-consumption rapid transformation method for an existing building balcony comprises the following steps:
s1, measuring the dimension of the existing balcony and checking with a drawing, providing dimension data for the prefabricated balcony board, prefabricating the integral balcony superposed beam and the integral superposed slab according to the measured dimension of the balcony, wherein the balcony superposed beam and the integral superposed slab form the balcony board;
s2, erecting a scaffold;
s3, dismantling existing building balcony windows, breast boards and balcony boards, before dismantling, if needing to reinforce other components, firstly carrying out reinforcement work and after the reinforcement components reach the designed strength, then dismantling the existing building outer walls, drilling reinforcement holes on the ring beam construction columns on the existing building outer walls, and determining the positions of the reinforcement holes according to the positions of the reinforcement outlet after the balcony superposed beams and the superposed slabs are combined;
s4, installing steel support pieces on the original outer wall of the existing building through bolts, wherein the size and the number of the steel support pieces are determined according to detailed calculation;
s5, inserting the prefabricated integral balcony slab into the corresponding reinforcing steel bar holes according to the bar outlet position, requiring one-to-one correspondence, straightening the reinforcing steel bars, removing rust, wherein the length of the removed rust is larger than that of the embedded bars, and after the reinforcing steel bars are embedded into the holes of the original ring beam constructional column, the integral balcony slab cannot move around, carrying out next fixing work, fixing the placed prefabricated balcony slab and the other end of the steel support, and ensuring that the balcony slab cannot swing randomly so as to facilitate subsequent construction;
s6, injecting structural adhesive into the reinforcing steel bar holes to be filled, wherein the structural adhesive cannot be disturbed randomly during the curing of the connecting position, and the next step can be carried out after the structural adhesive is cured and the strength meets the requirement;
s7, casting a cast-in-place layer on the balcony slab, and casting heat-insulating mortar in a gap between the balcony slab and the original outer wall;
s8, connecting the balcony breast board with the superposed beam by using angle steel, wherein the balcony breast board is an externally hung plate with the characteristics of light weight, high strength, fire resistance, sound insulation and the like, so that the balcony breast board is quickly installed;
s9, paving a waterproof layer on the balcony floor;
s10, mounting the high-efficiency energy-saving window on the balcony in an externally-embedded manner, mounting the window on the outer side of the structural opening, and finishing the opening before mounting the window to ensure that the flatness, the perpendicularity, the internal and external corner size and the like of the opening meet the standard requirements, so that no visible gap exists between the window and the opening when the window is mounted in an externally-embedded manner;
and S11, after the installation is finished, removing the steel supports, performing heat insulation plugging on the connecting holes, then removing the external scaffold, and when the external scaffold is removed, performing the steps in stages to prevent the thermal insulation layer of the external wall of the building from being damaged. Safety education is conducted on constructors before dismantling, and personal safety of the constructors is guaranteed.
Preferably, when the external scaffold is erected, the external scaffold is erected row by row, span by span and step by step according to the requirements of forming basic framework units, when the erected height is large, the stress checking calculation is carried out, reinforcing measures are set as necessary to ensure the stability of the scaffold, the overlapped height of the scaffold is convenient for workers to construct, and the critically erected scaffold is also provided with a safety channel.
Preferably, the depth, position, width and height of the reinforcement holes must be determined according to design requirements, when the reinforcement holes are punched, the concrete surface is roughened, loose particles are removed, the chiseling surface is brushed clean by steel wires, and the chiseling surface is washed clean by high-pressure water.
Preferably, the thermal conductivity coefficient of the thermal insulation mortar is less than or equal to 0.07W/(m 2K) and is far smaller than the thermal conductivity coefficient of reinforced concrete 1.74W/(m 2K), and the thermal insulation mortar is poured at the cast-in-place layer and the post-cast connecting seam, so that the thermal bridge effect generated by the reinforced concrete and the steel bars can be effectively avoided, the balcony is separated from the main structure, and the purpose of building thermal bridge interruption with low energy consumption is achieved.
Preferably, the balcony breast board is an ASA board, the type selection of the ASA board is determined according to design calculation, a design drawing is required to meet the requirements of a related drawing set, after the ASA board is fixed, the ASA board and the balcony board are fixed by angle steel to ensure the safety performance of the balcony breast board, after the wall body is installed, a penetrating bolt is required to penetrate and fix the wall board, the arrangement of the wall board is required to meet the requirements of the drawing set, steel members for connection are made of carbon structural steel Q235B grade steel and are required to meet the regulations of related specifications, after the wall board is installed, the surfaces of all board seams are additionally adhered with special adhesive to form 100 mm-wide glass fiber mesh cloth for reinforcement, and the outer wall leveling layer is constructed according to the requirements of the drawing set.
Preferably, the waterproof layer extends to the wall surface on the periphery from the ground, the upturning height is not less than 150mm, after the wall plate is installed, a polymer cement mortar leveling layer with the thickness of 3-5 mm is firstly smeared, then a layer of alkali-resistant glass fiber mesh cloth is fully paved and pasted, and finally the waterproof layer is paved.
Preferably, the window frame is fixed by a fixing piece when being installed, the heat-insulation bridge between the fixing piece and the wall body is isolated by a matched rubber pad, the joint of the window frame and the wall body is sealed by sealant, waterproof rain cloth is pasted on the inner side and the outer side of the window frame, a waterproof vapor-permeable membrane is pasted on the outdoor side, and a waterproof vapor-barrier membrane is pasted on the indoor side.
The low-energy-consumption reconstruction structure of the existing building balcony is reconstructed by the method.
Compared with the prior art, the invention has the beneficial effects that: the invention solves the technical problems of high construction difficulty, easy generation of heat bridges, poor bearing capacity and the like of the transformation of the existing building balcony of an old residential area, can meet the heat bridge-free technology and meet the requirement of low energy consumption, and can realize quick installation, reduce the construction period, increase the construction speed and reduce the influence on the original normal living order.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced 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 that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic plan view of the reinforcement of the prefabricated balcony slab of the present invention;
FIG. 2 is a schematic cross-sectional view taken along line 1-1 of FIG. 1 in accordance with the present invention;
FIG. 3 is a schematic view of the present invention illustrating the drilling of reinforcement holes;
FIG. 4 is a schematic view of the connection between the steel support frame and the outer wall according to the present invention;
FIG. 5 is a schematic view of the male platen with ribs inserted into the reinforcement holes of the present invention;
FIG. 6 is a schematic view of the male plate of the present invention fixed to the other end of the steel support;
FIG. 7 is a schematic view of pouring joint pouring heat-insulating mortar of the present invention;
FIG. 8 is a schematic view of the angle steel fixing balcony breast board of the present invention;
FIG. 9 is a schematic view of the externally-mounted balcony window of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, the present invention provides a low energy consumption fast transformation method for balcony of existing building: the method comprises the following steps:
s1, measuring the dimension of the existing balcony and checking with a drawing, providing dimension data for the prefabricated balcony board, prefabricating the integral balcony superposed beams and superposed slabs according to the measured dimension of the balcony, please refer to fig. 1-2, combining the balcony superposed beams and the superposed slabs to form the balcony board, selecting the beam size, the prefabricated thickness of the balcony board, the reinforcement requirement and the like according to detailed calculation books for the prefabricated superposed beams and the superposed slabs in specific engineering, and meeting the specification and drawing set requirements for specific design drawings, prefabricated components and the like;
s2, erecting a scaffold;
s3, dismantling existing building balcony windows, side boards and balcony boards, before dismantling, if needing to reinforce other components, firstly carrying out reinforcement work and after the reinforcement components reach the designed strength, then carrying out dismantling work, drilling reinforcement holes on ring beam construction columns on the outer walls of the existing buildings, and determining the positions of the reinforcement holes according to the positions of the reinforcement outlet after the balcony superposed beams and the superposed slabs are combined as shown in figure 3;
s4, installing steel support pieces on the original outer wall of the existing building through bolts, wherein the size and the number of the steel support pieces are determined according to detailed calculation, as shown in FIG. 4;
s5, inserting the prefabricated integral balcony slab into the corresponding reinforcing steel bar holes according to the positions of the reinforcing steel bars, requiring one-to-one correspondence, straightening the reinforcing steel bars, removing rust, wherein the length of the removed rust is larger than the length of the embedded reinforcing steel bars, and after the reinforcing steel bars are embedded into the holes of the original ring beam constructional columns, the integral balcony slab cannot move randomly, carrying out next fixing work, fixing the placed prefabricated balcony slab and the other end of the steel support, please refer to figures 5-6, and ensuring that the balcony slab cannot swing randomly so as to facilitate the subsequent construction;
s6, injecting structural adhesive into the reinforcing steel bar holes to be filled, wherein the structural adhesive cannot be disturbed randomly during the curing of the connecting position, and the next step can be carried out after the structural adhesive is cured and the strength meets the requirement;
s7, casting a cast-in-place layer on the balcony slab, and casting heat-insulating mortar in a gap between the balcony slab and the original outer wall, as shown in figure 7;
s8, connecting the balcony breast board with the superposed beam by using angle steel, wherein as shown in figure 8, the balcony breast board is an externally hung plate with the characteristics of light weight, high strength, fire resistance, sound insulation and the like, so that the balcony breast board is quickly installed;
s9, paving a waterproof layer on the balcony floor;
s10, mounting the high-efficiency energy-saving window on the balcony in an externally-embedded manner, as shown in FIG. 9, mounting the window on the outer side of the structural opening, wherein the opening must be finely finished before the window is mounted, so that the flatness, verticality, internal and external corner size and the like of the opening meet the standard requirements, and no visible gap exists between the window and the opening when the window is mounted in an externally-embedded manner;
and S11, after the installation is finished, removing the steel supports, performing heat insulation plugging on the connecting holes, then removing the external scaffold, and when the external scaffold is removed, performing the steps in stages to prevent the thermal insulation layer of the external wall of the building from being damaged. Safety education is conducted on constructors before dismantling, and personal safety of the constructors is guaranteed.
When the external scaffold is erected, the external scaffold is erected row by row, span by span and step by step according to the requirements of forming basic framework units, when the erection height is large, the stress checking calculation is carried out, reinforcing measures are set as necessary to ensure the stability of the scaffold, the overlapping height of the scaffold is convenient for workers to construct, and a safety channel is also set for a scaffold which is erected critically.
The depth, position, width and height of the reinforcing steel bar hole must be determined according to design requirements, when the reinforcing steel bar hole is punched, the surface of concrete is chiseled, loose particles are removed, the chiseled surface is brushed by using steel wires, and the chiseled surface is washed clean by using high-pressure water.
The thermal conductivity coefficient of the thermal insulation mortar is less than or equal to 0.07W/(m 2K) and is far less than the thermal conductivity coefficient of reinforced concrete (1.74W/(m 2K), and the thermal insulation mortar is poured at the cast-in-place layer and the post-cast connecting seam, so that the thermal bridge effect generated by the reinforced concrete and the steel bars can be effectively avoided, the balcony is separated from the main structure, and the purpose of building thermal bridge interruption with low energy consumption is achieved.
The balcony breast board adopts ASA board, the type of ASA board is selected and calculated and confirmed according to the design, the design drawing should accord with the requirement of the relevant atlas, after the ASA board is fixed, the ASA board and the balcony board are fixed by angle steel, the safety performance of the balcony breast board is guaranteed, after the wall body is installed, the wall board needs to be fixed by perforating through bolts, the arrangement of the wall board should accord with the requirement of the atlas, the steel member for connection should adopt carbon structural steel Q235B grade steel, and should accord with the regulation of the relevant specification, after the wall board is installed, all board seam surfaces are additionally pasted with 100mm wide alkali-resistant fiber web grid cloth by using a special binder for reinforcement, and the outer wall leveling layer is constructed according to the requirement of the atlas.
The waterproof layer extends to the surrounding wall surface from the ground, the upturning height is not less than 150mm, after the wallboard is installed, a polymer cement mortar leveling layer with the thickness of 3-5 mm is firstly smeared, then a layer of alkali-resistant glass fiber mesh cloth is fully paved and pasted, and finally the waterproof layer is paved.
The window frame is fixed by a fixing piece when being installed, a heat-insulating bridge is cut off between the fixing piece and the wall body by a matched rubber pad, the joint of the window frame and the wall body is sealed by sealant, waterproof rain cloth is pasted on the inner side and the outer side of the window frame, a waterproof vapor-permeable membrane is pasted on the outdoor side, and a waterproof vapor-barrier membrane is pasted on the indoor side.
The low-energy-consumption transformation structure of the existing building balcony is transformed by the method.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims (8)

1. A low-energy-consumption rapid transformation method for an existing building balcony is characterized by comprising the following steps:
s1, measuring the size of the existing balcony and checking the size with a drawing, prefabricating an integral balcony composite beam and a composite slab according to the measured balcony size, and combining the balcony composite beam and the composite slab to form a balcony slab;
s2, erecting a scaffold;
s3, dismantling the existing building balcony window, the breast board and the balcony board, drilling reinforcing steel bar holes on the ring beam structural columns of the existing building outer wall, and determining the positions of the reinforcing steel bar holes according to the positions of the reinforcing steel bars which are output after the balcony superposed beams and the superposed slabs are combined;
s4, mounting a steel support on the original outer wall of the existing building through bolts;
s5, inserting the prefabricated integral balcony slab into the corresponding reinforcing steel bar holes according to the position of the reinforcing steel bar, requiring one-to-one correspondence, fixing the placed prefabricated balcony slab and the other end of the steel support, and ensuring that the balcony slab does not shake randomly so as to facilitate subsequent construction;
s6, injecting structural glue into the holes of the reinforcing steel bars and filling the holes with the structural glue;
s7, casting a cast-in-place layer on the balcony slab, and casting heat-insulating mortar in a gap between the balcony slab and the original outer wall;
s8, connecting the balcony breast boards and the superposed beams by using angle steel;
s9, paving a waterproof layer on the balcony floor;
s10, mounting the high-efficiency energy-saving window on the balcony in an externally-embedded mode, and mounting the window on the outer side of the structural opening;
and S11, after the installation is finished, removing the steel support, performing heat insulation plugging on the connecting hole, and then removing the outer scaffold.
2. The low-energy-consumption rapid transformation method for the balcony of the existing building according to claim 1, is characterized in that: when the external scaffold is erected, the external scaffold is erected row by row, span by span and step by step according to the requirements of forming basic framework units, when the erected height is larger, the stress is checked, and if necessary, reinforcing measures are set to ensure the stability of the scaffold.
3. The low-energy-consumption rapid transformation method for the balcony of the existing building according to claim 1, is characterized in that: the depth, position, width and height of the reinforcing steel bar holes must be determined according to design requirements, when the reinforcing steel bar holes are punched, the concrete surface is roughened, loose particles are removed, the chiseling surface is brushed by using steel wires, and the chiseling surface is washed cleanly by using high-pressure water.
4. The low-energy-consumption rapid transformation method for the balcony of the existing building according to claim 1, is characterized in that: the thermal conductivity coefficient of the thermal insulation mortar is less than or equal to 0.07W/(m 2K).
5. The low-energy-consumption rapid transformation method for the balcony of the existing building according to claim 1, is characterized in that: the balcony breast board adopts ASA board, the type selection of ASA board is determined according to design calculation, and the design drawing should accord with the requirement of relevant atlas.
6. The low-energy-consumption rapid transformation method for the balcony of the existing building according to claim 1, is characterized in that: the waterproof layer extends to the wall surface on the periphery from the ground, the upturning height is not less than 150mm, after the wallboard is installed, a polymer cement mortar leveling layer with the thickness of 3-5 mm is firstly smeared, then a layer of alkali-resistant glass fiber mesh cloth is fully paved, and finally the waterproof layer is paved.
7. The low-energy-consumption rapid transformation method for the balcony of the existing building according to claim 1, is characterized in that: the window frame is fixed by a fixing piece when being installed, a heat-insulating bridge is isolated between the fixing piece and the wall body by a matched rubber pad, the joint of the window frame and the wall body is sealed by sealant, and waterproof cloth is pasted on the inner side and the outer side of the window frame.
8. The utility model provides an existing building balcony low energy consumption reforms transform structure which characterized in that: the modified structure is modified by the method of any one of claims 1 to 7.
CN202010149804.3A 2020-03-06 2020-03-06 Assembly type low-energy-consumption transformation structure and rapid transformation method for existing building balcony Pending CN111305590A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112459239A (en) * 2020-11-30 2021-03-09 中国二十二冶集团有限公司 Fixing and supporting device and fixing method for assembly type building balcony

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209145323U (en) * 2018-10-18 2019-07-23 河北省建筑科学研究院 Balcony is transformed in the low energy consumption of existing building

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209145323U (en) * 2018-10-18 2019-07-23 河北省建筑科学研究院 Balcony is transformed in the low energy consumption of existing building

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112459239A (en) * 2020-11-30 2021-03-09 中国二十二冶集团有限公司 Fixing and supporting device and fixing method for assembly type building balcony

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