CN111472503B - Existing building roof sound insulation screen structure and construction method - Google Patents
Existing building roof sound insulation screen structure and construction method Download PDFInfo
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- CN111472503B CN111472503B CN202010298592.5A CN202010298592A CN111472503B CN 111472503 B CN111472503 B CN 111472503B CN 202010298592 A CN202010298592 A CN 202010298592A CN 111472503 B CN111472503 B CN 111472503B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
- E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage; Sky-lights
- E04D13/14—Junctions of roof sheathings to chimneys or other parts extending above the roof
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Abstract
The invention relates to a roof sound insulation screen structure of an existing building and a construction method, based on a roof surface building, a parapet wall (2) is divided into an A-level parapet wall (2-1) and a B-level parapet wall (2-2), so that the arrangement of steel beams (4) between adjacent frame columns (1) under the structure of the A-level parapet wall (2-1) and the arrangement of the steel beams (4) on the top surface of the roof surface building under the structure of the B-level parapet wall (2-2) are respectively realized, and the erection of steel columns (3) of the sound insulation screen is realized based on the steel beams (4) built around the periphery of the parapet wall (2) of the existing building, so that the installation of a final system sound insulation board is finished, the damage to the structural layer of the existing roof surface during the installation of a sound insulation system is avoided, the roof surface structure of the existing building is effectively protected, and excellent sound insulation, sound insulation and sound insulation, and sound insulation of the like are obtained, The sound absorption effect, and in the practical application process of whole system, the installation method is simple and easy simultaneously, has certain comprehensive economic nature.
Description
Technical Field
The invention relates to a roof sound-proof screen structure of an existing building and a construction method, and belongs to the technical field of building construction.
Background
Along with the pace of the urbanization process of China, high and large buildings in cities are more and more, equipment on the top roof of the buildings is more and more, the influence of noise generated by the equipment on adjacent buildings is more and more obvious, and accordingly, the sound insulation, sound absorption and noise reduction system on the top floor of the buildings is continuously developed. The sound absorption and insulation system generally comprises a main structure for supporting sound insulation materials and an aluminum alloy sound insulation and absorption plate, but steel columns of the main structure of the general sound insulation system are connected with a main roof of a building through column bottom supporting and column sides are connected with parapet walls of the building, so that the steel columns are connected with the main structure, the waterproof and heat insulation layers of the main roof of the original structure can be damaged by the method, and the method can cause adverse effects on the waterproof and heat insulation of the main roof.
Disclosure of Invention
The invention aims to provide a sound-proof screen structure of the roof of the existing building, which can ensure that the roof of the existing building is not damaged while obtaining excellent sound-proof effect.
The invention adopts the following technical scheme for solving the technical problems: the invention designs a sound-proof screen structure of an existing building roof, which is based on all frame columns distributed and arranged on the edge of the existing building roof along a circle and parapet walls between adjacent frame columns, and realizes the arrangement of a sound-proof screen system; aiming at parapet walls among adjacent frame columns of each group and around the edge of the existing building roof, defining the parapet walls without roof buildings among wall spans as A-level parapet walls, and defining other parapet walls as B-level parapet walls respectively;
the roof surface building aiming at each section of B-level parapet wall position respectively: the method comprises the following steps that main supporting steel columns are fixedly arranged on the top surface of a building along the edge, corresponding to the edge of the roof of the existing building, of the top surface of the building on the roof surface according to preset intervals, are in a vertical posture and are coplanar with each other, two steel beams are arranged in a horizontal posture according to preset vertical upper and lower height positions and are respectively butted with the main supporting steel columns, sound insulation screen steel columns are arranged along the two steel beams according to the preset intervals, the sound insulation screen steel columns are respectively fixedly butted with the upper steel beam and the lower steel beam at the set positions according to the vertical posture and the side surfaces, the distances between the sound insulation screen steel columns and the surface where the inner side surface of the top of the B-level parapet at the set positions of the sound insulation screen steel columns are equal to each other, and the tops of the sound insulation screen steel columns are located at the same height; the tops of all the sound insulation screen steel columns arranged on the top surfaces of the buildings on the roof surfaces are all located at the same height;
the preset lower limit height position of the concave surface at the inner side of each section of A-level parapet wall is respectively and horizontally fixedly provided with a steel beam, the preset lower limit height position is higher than the top height of a shaft of an existing building roof, two ends of each steel beam are respectively and fixedly butted with the inner side surfaces of frame columns at two sides of the arranged A-level parapet wall, each sound insulation screen steel column is distributed and arranged according to a preset interval along the steel beam on the inner side surface of each section of A-level parapet wall, each sound insulation screen steel column is respectively and fixedly butted with the steel beam at the arranged position in a vertical posture and the side surface, the distances between each sound insulation screen steel column and the inner side surface at the top of the arranged A-level parapet wall are equal to each other, and the tops of the sound insulation screen steel columns are positioned at the same height;
the inner side surfaces of the frame columns connected with the A-level parapet walls are respectively and fixedly connected with sound insulation screen steel columns, each sound insulation screen steel column is in a vertical posture, the distances between each sound insulation screen steel column and the inner side surface of the frame column connected with the sound insulation screen steel column are equal, and the tops of the sound insulation screen steel columns are located at the same height;
the distances between the sound insulation screen steel columns arranged at the positions of the A-grade parapet walls and the positions of the frame columns connected with the A-grade parapet walls and the surface where the inner side surface of the top of the A-grade parapet wall is arranged are equal, and the tops of the sound insulation screen steel columns are located at the same height;
in all the steel beams, along the edge of the existing building roof for a circle, the projections of the steel beams at the adjacent positions in the vertical direction are mutually butted; in all the sound insulation screen steel columns, the distances between each sound insulation screen steel column and the surface of the inner side face of the top of the parapet wall corresponding to the sound insulation screen steel column are equal, and the tops of all the sound insulation screen steel columns are located at the same height; along existing building roof border a week, based on each sound-proof screen steel column, set up the system acoustic celotex board.
As a preferred technical scheme of the invention: and the inner side surfaces of the frame columns which are connected with the A-level parapet and the B-level parapet are respectively and fixedly connected with secondary supporting steel columns in vertical postures, and each secondary supporting steel column is respectively and fixedly connected with the corresponding end parts of the two steel beams on the side of the B-level parapet corresponding to the arranged position of the secondary supporting steel column.
As a preferred technical scheme of the invention: the roof structure is characterized by further comprising each inclined strut steel which corresponds to each main strut steel column respectively, one end of each inclined strut steel is fixedly butted with the top end of the corresponding main strut steel column respectively, each inclined strut steel is located on one side, back to the edge of the existing building roof, of the corresponding main strut steel column respectively, the other end of each inclined strut steel is fixedly butted with the top surface of a building with a roof surface which is arranged on the corresponding main strut steel column, and each inclined strut steel is coplanar with the corresponding main strut steel column respectively.
As a preferred technical scheme of the invention: and each main supporting steel column and each diagonal supporting steel column are respectively and fixedly connected with the top surface of the building with the roof surface through a concrete column pier arranged on the top surface of the building with the roof surface.
As a preferred technical scheme of the invention: the side surfaces of all the sound insulation screen steel columns arranged corresponding to all the sections of the A-level parapets are fixedly connected with the steel beams at the arranged positions, and meanwhile, the side surfaces of all the sound insulation screen steel columns are fixedly butted with the inner side concave surfaces of the A-level parapets at the corresponding positions through short connecting steel and gusset plates;
the side surfaces of the secondary support steel columns are fixedly connected with the inner side surfaces of the corresponding frame columns respectively through an upper position and a lower position, and the inner side surfaces of the corresponding frame columns are fixedly butted with the secondary support steel columns respectively through short connecting steel and node plates at the upper position and the lower position.
As a preferred technical scheme of the invention: the sound insulation screen steel columns fixedly butted with the steel beams are butted with the corresponding steel beams through connecting plates by bolts respectively;
and each sound-proof screen steel column connected with the inner side surface of each frame column is fixedly connected with the inner side surface of the corresponding frame column through an upper position and a lower position respectively, and each sound-proof screen steel column is fixedly butted with the inner side surface of the corresponding frame column through a connecting plate and a gusset plate respectively at the upper position and the lower position.
As a preferred technical scheme of the invention: the system sound-proof board based on each sound-proof screen steel column setting includes perforation sound-proof board, hole aluminum alloy sound-proof board, aluminum alloy acoustic baffle three layer construction in proper order along existing building roof border to existing building roof central direction.
As a preferred technical scheme of the invention: the hollow-out position of the concave surface at the inner side of each section of parapet wall is pasted with a hole aluminum alloy sound insulation plate, and the concave surfaces at the inner sides of the rest sections of parapets are pasted with aluminum alloy sound absorption plates.
In view of the above, the technical problem to be solved by the present invention is to provide a construction method of existing building roof sound insulation screen structure, which improves the construction efficiency of the sound insulation screen structure through a construction process designed by new steps.
The invention adopts the following technical scheme for solving the technical problems: the invention designs a construction method of a roof sound insulation screen structure of an existing building, which comprises the following steps:
step A, based on the height of a building on the roof-out surface of the existing building roof, determining the designed height positions h of the tops of all the sound-proof screen steel columns, determining the preset lower limit height position higher than the top height of the shaft of the existing building roof, and determining the distance p between each sound-proof screen steel column and the surface of the inner side surface of the top of the parapet wall at the set position;
b, aiming at parapets between adjacent frame columns of each group and a circle of the edge of the existing building roof, dividing the parapets without roof buildings among wall spans into A-level parapets, and dividing the rest parapets into B-level parapets;
c, horizontally and fixedly arranging steel beams aiming at the preset lower limit height position of the concave surface on the inner side of each section of the A-level parapet wall respectively, and fixedly butting the two ends of each steel beam with the inner side surfaces of the frame columns on the two sides of the A-level parapet wall respectively;
d, respectively arranging each sound insulation screen steel column along the steel beam on the inner side surface of each section of the A-level parapet wall according to a preset interval distribution, wherein each sound insulation screen steel column is fixedly butted with the steel beam at the arranged position in a vertical posture and a side surface respectively, meanwhile, the side surface of each sound insulation screen steel column is fixedly butted with the inner side concave surface of the A-level parapet wall at the corresponding position respectively, the distance between each sound insulation screen steel column and the inner side surface of the top of the A-level parapet wall at the arranged position is kept to be p, and the top height of each sound insulation screen steel column reaches a designed height position h;
e, fixedly connecting sound-proof screen steel columns to the inner side faces of the frame columns connected with the A-level parapet walls respectively, wherein each sound-proof screen steel column is in a vertical posture, the distance between each sound-proof screen steel column and the inner side face of the frame column connected with the sound-proof screen steel column is p, and the top height of each sound-proof screen steel column reaches a designed height position h;
and F, respectively executing the following processes aiming at the buildings with the roof surfaces at the positions of all the sections of the B-level parapet walls:
firstly, all main supporting steel columns are distributed and fixedly arranged along the edge of the top surface of a building on the roof surface, which corresponds to the edge of the roof of the existing building, according to preset intervals, and are in a vertical posture and are coplanar with each other;
then arranging two steel beams in a horizontal posture according to a preset vertical upper-lower height position to be respectively butted with the main supporting steel columns;
finally, arranging each sound insulation screen steel column along the two steel beams according to a preset interval distribution, wherein each sound insulation screen steel column is fixedly butted with the upper steel beam and the lower steel beam at the arranged positions in a vertical posture and a side surface respectively, the distance between each sound insulation screen steel column and the surface of the inner side surface of the top of the B-grade parapet wall at the arranged position is p, and the top height of each sound insulation screen steel column reaches a designed height position h;
based on the completion of the execution process of the roof surface buildings at the B-level parapet positions of each section, the obtained steel beams corresponding to the roof surface buildings and the steel beams corresponding to the A-level parapets of each section are butted with each other along the edge of the existing building roof in a circle, and the projections of the steel beams at the adjacent positions in the vertical direction are butted with each other;
step G, aiming at each frame column for simultaneously connecting the A-level parapet and the B-level parapet, respectively and fixedly connecting secondary support steel columns in vertical postures on the inner side surfaces of the frame columns, and respectively and fixedly connecting the secondary support steel columns with corresponding end parts of two steel beams on the side of the B-level parapet corresponding to the arranged positions of the secondary support steel columns;
and step H, arranging system sound insulation boards along the edge of the existing building roof for one circle based on each sound insulation screen steel column.
As a preferred technical scheme of the invention: step I is also included, after the step H is executed, step I is carried out;
and step I, respectively sticking hole aluminum alloy sound insulation plates to the hollow positions of the inner side concave surfaces of all the sections of parapet walls, and respectively sticking aluminum alloy sound absorption plates to the inner side concave surfaces of the rest sections of parapet walls.
Compared with the prior art, the invention has the following technical effects by adopting the technical scheme:
the invention designs an existing building roof sound insulation screen structure, based on a roof surface building, a parapet wall is divided into an A-level parapet wall and a B-level parapet wall aiming at the parapet wall, so that the arrangement of steel beams between adjacent frame columns under the A-level parapet wall structure and the arrangement of steel beams on the roof surface of a roof surface building under the B-level parapet wall structure are respectively realized, and further, based on the steel beams built around the periphery of the parapet wall of the existing building roof surface, the erection of each sound insulation screen steel column is realized, and the installation of a final system sound insulation board is further completed, so that the damage to the existing building roof surface structure layer when a sound insulation system is installed is avoided, the existing building roof surface structure is effectively protected, excellent sound insulation and sound absorption effects are obtained, and meanwhile, in the actual application process of the whole system, the installation method is simple and has certain comprehensive economy.
Drawings
FIG. 1a is a schematic structural view of a sound barrier steel column connected to a class A parapet wall in the design of the present invention;
FIG. 1b is a schematic structural view of a sound barrier steel column connected to a class A parapet in accordance with the present invention;
FIG. 2 is a schematic view showing the connection of the triangular diagonal braces of the steel columns of the sound-proof shield of the roof support according to the present invention;
FIG. 3 is a schematic view of a secondary support steel column structure connected to a high-low elevation steel beam according to the present invention;
FIG. 4 is a schematic view of a system baffle design according to the present invention;
FIG. 5 is a schematic structural diagram of an aluminum alloy sound insulation system for parapet wall holes in the design of the invention;
FIG. 6 is a schematic view of an aluminum alloy sound absorbing structure in the design of the present invention.
Wherein, 1, a frame column; 2. a parapet wall; 2-1, class a parapet; grade 2-2, class B parapet; 3. a sound insulation screen steel column; 4. a steel beam; 5. short connecting steel; 6. a connecting plate; 7. a bolt; 8. a gusset plate; 9-1, main supporting steel columns; 9-2, secondary supporting steel columns; 10. diagonal bracing steel; 11. concrete piers; 12. perforating a sound insulation board; 13. a hole aluminum alloy sound insulation plate; 14. aluminum alloy acoustic baffle.
Detailed Description
The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.
The invention designs a sound insulation screen structure of an existing building roof, which is based on all frame columns 1 distributed and arranged on the edge of the existing building roof along a circle and parapet walls 2 between the adjacent frame columns 1, and realizes the arrangement of a sound insulation screen system; for parapet walls 2 among a circle of the edge of a roof of an existing building and among each group of adjacent frame columns 1, parapet walls, where no roof face building exists among wall spans, are defined as A-grade parapet walls 2-1, and the rest parapet walls 2 are respectively defined as B-grade parapet walls 2-2.
In practical application, for the B-level parapet walls 2-2, namely structures such as staircases and equipment rooms of roofs exist among the parapet walls, and when the steel beam 4 cannot be connected with the two end frame columns 1 of the parapet walls, the structures are respectively used for roof-surface buildings at the positions of the B-level parapet walls 2-2: as shown in fig. 2, each main supporting steel column 9-1 is fixedly arranged along the edge of the top surface of the building corresponding to the edge of the existing building roof along the roof surface, each main supporting steel column 9-1 is in a vertical posture and is coplanar with each other, two steel beams 4 are arranged in a horizontal posture and at preset vertical upper and lower height positions to be respectively butted with each main supporting steel column 9-1, each sound-proof screen steel column 3 is arranged along the two steel beams 4 at preset intervals, each sound-proof screen steel column 3 is respectively fixedly butted with the upper steel beam 4 and the lower steel beam 4 at the arranged position in a vertical posture and side surface, the distance between each sound-proof screen steel column 3 and the surface of the inner side surface of the top of the B-level parapet 2-2 at the arranged position is equal to each other, and the top of each sound-proof screen steel column 3 is arranged at the same height, each sound insulation screen steel column 3 is butted with a corresponding steel beam 4 through a connecting plate 6 by using bolts 7; the tops of the sound insulation screen steel columns 3 arranged on the top surfaces of the buildings on the roof surfaces are all located at the same height. In practical application, girder steel 4 adopts the rectangular cross section, can guarantee that girder steel 4 all has close rigidity and intensity when bearing horizontal load and vertical load, and the side of being convenient for simultaneously links to each other with sound insulation screen steel column 3.
In practical application, for the erection of each main support steel column 9-1, each diagonal support steel 10 corresponding to each main support steel column 9-1 is added, one end of each diagonal support steel 10 is fixedly butted with the top end of the corresponding main support steel column 9-1, each diagonal support steel 10 is positioned on one side of the corresponding main support steel column 9-1, which faces away from the edge of the existing building roof, the other end of each diagonal support steel 10 is fixedly butted with the top surface of the building with the roof surface set up corresponding to the main support steel column 9-1, and each diagonal support steel 10 is coplanar with the corresponding main support steel column 9-1. In practical application, each main supporting steel column 9-1 and each diagonal supporting steel column 10 are respectively and fixedly connected with the top surface of the building on the roof through a concrete pier 11 arranged on the top surface of the building on the roof.
Meanwhile, the steel beams 4 are horizontally and fixedly arranged aiming at preset lower limit height positions H of the inner side concave surfaces of all sections of A-level parapets 2-1 respectively, the preset lower limit height positions H are higher than the top height of a well of an existing building roof, namely, the steel beams 4 are guaranteed not to be separated by the well, two ends of each steel beam 4 are fixedly butted with the inner side surfaces of frame columns 1 on two sides of the A-level parapets 2-1 respectively, in practical application, the steel beams 4 are connected with the inner side surfaces of the frame columns 1 through chemical anchor bolt node plates anchored into the columns, the node plates are welded with the steel beams and are hinged to guarantee that the chemical anchor bolts anchored into the original frame columns only bear shearing force. As shown in fig. 1a, each sound-proof screen steel column 3 is distributed according to a preset interval along the steel beam 4 on the inner side surface of each section of the class a parapet 2-1, each sound-proof screen steel column 3 is fixedly butted with the steel beam 4 at the set position in a vertical posture and a side surface, the distances between each sound-proof screen steel column 3 and the inner side surface of the top of the class a parapet 2-1 at the set position are equal to each other, and the top of each sound-proof screen steel column 3 is located at the same height, in practical application, each sound-proof screen steel column 3 is butted with the corresponding steel beam 4 through a connecting plate 6 by using bolts 7; and each sound-proof screen steel column 3 arranged corresponding to each section of A-level parapet 2-1 is fixedly connected with the steel beam 4 at the arranged position on the side surface, and the side surface of each sound-proof screen steel column 3 is fixedly butted with the inner concave surface of the A-level parapet 2-1 at the corresponding position through the short connecting steel 5 and the gusset plate 8.
As shown in fig. 1b, for each frame column 1 connected to each section of a-level parapet 2-1, a sound-proof screen steel column 3 is respectively and fixedly connected to the inner side surface of the frame column 1, each sound-proof screen steel column 3 is in a vertical posture, the distances between each sound-proof screen steel column 3 and the inner side surfaces of the frame columns 1 connected thereto are equal to each other, the top of each sound-proof screen steel column 3 is located at the same height, in practical application, each sound-proof screen steel column 3 is respectively and fixedly connected to the inner side surface of the corresponding frame column 1 through an upper position and a lower position, and each sound-proof screen steel column 3 is fixedly connected to the inner side surface of the corresponding frame column 1 through a connecting plate 6 and a node plate 8 in sequence at the upper position and the lower position.
The distances between the sound insulation screen steel columns 3 arranged at the positions of the class-A parapets 2-1 and the frame columns 1 connected with the class-A parapets and the surface where the inner side surfaces of the tops of the class-A parapets 2-1 are located are equal, and the tops of the sound insulation screen steel columns 3 are located at the same height.
In practical application, as shown in fig. 3, the secondary support steel columns 9-2 in vertical postures are respectively and fixedly connected to the inner side surfaces of the frame columns 1 which are simultaneously connected with the class a parapet 2-1 and the class B parapet 2-2, and each secondary support steel column 9-2 is respectively and fixedly connected with the corresponding end parts of the two steel beams 4 on the side of the class B parapet 2-2 corresponding to the set position of the secondary support steel column 9-2. And the side surface of each secondary support steel column 9-2 is fixedly connected with the inner side surface of the corresponding frame column 1 through an upper position and a lower position respectively, and each secondary support steel column 9-2 is fixedly butted with the inner side surface of the corresponding frame column 1 through a short connecting steel 5 and a gusset plate 8 at the upper position and the lower position respectively.
In all the steel beams 4, along the edge of the existing building roof for a circle, the projections of the steel beams 4 at the adjacent positions in the vertical direction are butted with each other; in all the sound insulation screen steel columns 3, the distances between each sound insulation screen steel column 3 and the surface of the inner side surface of the top of the parapet wall 2 corresponding to the sound insulation screen steel column 3 are equal, and the tops of all the sound insulation screen steel columns 3 are located at the same height; along existing building roof border a week, based on each sound-proof screen steel column 3, set up the system acoustic celotex board.
In practical application, the system sound insulation board arranged based on each sound insulation screen steel column 3 sequentially comprises a perforated sound insulation board 12, a hole aluminum alloy sound insulation board 13 and an aluminum alloy sound absorption board 14 in a three-layer structure from the edge of the existing building roof to the center of the existing building roof as shown in fig. 4; meanwhile, as shown in fig. 5, the hole aluminum alloy sound insulation plate 13 is attached to the hollow-out position of the concave surface on the inner side of each section of the parapet wall 2, and as shown in fig. 6, the aluminum alloy sound absorption plate 14 is attached to the concave surface on the inner side of the rest sections of the parapet walls 2, so that the hole aluminum alloy sound insulation plate is matched with the installation of the system sound insulation plate to enhance the overall sound insulation effect of the roof surface of the existing building.
Aiming at the structure of the existing building roof sound insulation screen structure, the invention further designs a construction method in practical application, and specifically executes the following steps.
And step A, based on the height of a building on the roof-out surface of the existing building roof, determining the designed height positions h of the tops of all the sound-proof screen steel columns 3, determining the preset lower limit height position higher than the top height of the shaft of the existing building roof, and determining the distance p between each sound-proof screen steel column 3 and the surface where the inner side surface of the top of the parapet 2 is located.
And step B, aiming at parapet walls 2 among all groups of adjacent frame columns 1 on the periphery of the edge of the existing building roof, dividing the parapet walls without roof buildings among wall spans into A-grade parapet walls 2-1, and dividing the rest parapet walls 2 into B-grade parapet walls 2-2.
And C, horizontally and fixedly arranging steel beams 4 aiming at the preset lower limit height position of the concave surface on the inner side of each section of the A-level parapet 2-1, and fixedly butting the inner side surfaces of the frame columns 1 on the two sides of the A-level parapet 2-1 at the two ends of each steel beam 4.
And D, respectively arranging each sound insulation screen steel column 3 along the steel beam 4 on the inner side surface of each section of the A-level parapet 2-1 according to a preset interval distribution, fixedly butting the steel beam 4 at the set position to the side surface of each sound insulation screen steel column 3 in a vertical posture, and fixedly butting the side surface of each sound insulation screen steel column 3 to the inner side concave surface of the corresponding position A-level parapet 2-1, respectively, keeping the distance between each sound insulation screen steel column 3 and the inner side surface of the top of the A-level parapet 2-1 at the set position to be p, and keeping the top height of each sound insulation screen steel column 3 to reach the designed height position h.
And E, fixedly connecting sound-proof screen steel columns 3 to the inner side surfaces of the frame columns 1 connected with the A-level parapet walls 2-1 respectively, wherein the sound-proof screen steel columns 3 are in vertical postures, the distances between the sound-proof screen steel columns 3 and the inner side surfaces of the frame columns 1 connected with the sound-proof screen steel columns 3 are distances p respectively, and the top heights of the sound-proof screen steel columns 3 reach design height positions h.
And F, respectively aiming at the building with the roof surface at the 2-2 position of each section of the B-level parapet wall, executing the following processes:
firstly, fixedly arranging various main supporting steel columns 9-1 along the edge of the top surface of a building on a roof surface, which corresponds to the edge of the roof of the existing building, according to a preset interval, wherein the various main supporting steel columns 9-1 are in a vertical posture and are coplanar with one another;
then arranging two steel beams 4 in a horizontal posture according to a preset vertical upper-lower height position to be respectively butted with each main supporting steel column 9-1;
finally, arranging each sound insulation screen steel column 3 along the two steel beams 4 according to a preset interval distribution, wherein each sound insulation screen steel column 3 is fixedly butted with the upper steel beam 4 and the lower steel beam 4 at the arranged positions in a vertical posture and a side surface respectively, the distance between each sound insulation screen steel column 3 and the surface of the inner side surface of the top of the B-grade parapet 2-2 at the arranged position is a distance p, and the top height of each sound insulation screen steel column 3 reaches a designed height position h;
based on the completion of the execution process of the roof surface building aiming at each section of the B-level parapet 2-2 position, the obtained steel beams 4 corresponding to each roof surface building and the steel beams 4 corresponding to each section of the A-level parapet 2-1 are butted with each other along the periphery of the existing building roof edge, and the projections of the steel beams 4 at the adjacent positions in the vertical direction are butted with each other.
And G, aiming at each frame column 1 which is simultaneously connected with the A-level parapet 2-1 and the B-level parapet 2-2, respectively and fixedly connecting secondary support steel columns 9-2 in vertical postures on the inner side surfaces of the frame columns 1, and respectively and fixedly connecting the secondary support steel columns 9-2 with the corresponding end parts of the two steel beams 4 on the side of the B-level parapet 2-2 corresponding to the set positions of the secondary support steel columns 9-2.
And step H, arranging system sound insulation boards along the edge of the existing building roof for one circle based on each sound insulation screen steel column 3.
And step I, respectively sticking hole aluminum alloy sound insulation plates 13 to the hollow positions of the inner side concave surfaces of all the sections of parapet walls 2, and respectively sticking aluminum alloy sound absorption plates 14 to the inner side concave surfaces of all the other sections of parapet walls 2.
The existing building roof sound insulation screen structure designed by the technical scheme is based on a roof surface building, the parapet wall 2 is divided into a level A parapet wall 2-1 and a level B parapet wall 2-2, the arrangement of steel beams 4 between adjacent frame columns 1 under the level A parapet wall 2-1 structure and the arrangement of steel beams 4 on the roof surface of the roof surface building under the level B parapet wall 2-2 structure are respectively realized, the erection of each sound insulation screen steel column 3 is realized based on the steel beams 4 surrounding the parapet wall 2 for one circle of the existing building roof surface, the installation of the final system sound insulation board is further completed, the damage to the existing building roof surface structure layer during the installation of the sound insulation system is avoided, the existing building roof surface structure is effectively protected, excellent sound insulation and sound absorption effects are obtained, and meanwhile, the installation method is simple and easy in the actual application process of the whole system, has certain comprehensive economy.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (10)
1. A sound insulation screen structure of an existing building roof is characterized in that a sound insulation screen system is arranged on the basis of all frame columns (1) distributed on the edge of the existing building roof in a circle and parapet walls (2) between adjacent frame columns (1); the method is characterized in that: aiming at parapet walls (2) between each group of adjacent frame columns (1) at one circle of the edge of the existing building roof, defining the parapet walls without roof buildings between wall spans as A-level parapets (2-1), and defining other parapets (2) as B-level parapets (2-2);
building on the roof surface respectively aiming at the positions of all the B-grade parapet walls (2-2): all main supporting steel columns (9-1) are distributed and fixed along the edge of the roof of the building corresponding to the edge of the roof of the existing building at preset intervals, the main supporting steel columns (9-1) are in a vertical posture and are coplanar with each other, two steel beams (4) are arranged in a horizontal posture according to the preset vertical upper and lower height positions and are respectively butted with the main supporting steel columns (9-1), the sound insulation screen steel columns (3) are distributed along the two steel beams (4) according to the preset distance, the upper and lower steel beams (4) are fixedly butted at the positions of the sound insulation shield steel columns (3) in a vertical posture and the side surfaces respectively, the distances between each sound-proof screen steel column (3) and the surface of the inner side face of the top of the B-level parapet (2-2) at the position where the sound-proof screen steel columns are arranged are equal to each other, and the tops of the sound-proof screen steel columns (3) are located at the same height; the tops of the sound insulation screen steel columns (3) arranged on the top surfaces of the buildings on the roof surfaces are all positioned at the same height;
the steel beams (4) are horizontally and fixedly arranged at preset lower limit height positions of concave surfaces on the inner sides of all sections of A-level parapets (2-1) respectively, the preset lower limit height positions are higher than the top height of a shaft of an existing building roof, the inner side surfaces of frame columns (1) on the two sides of the A-level parapets (2-1) are fixedly butted at the two ends of each steel beam (4) respectively, and all sound insulation screen steel columns (3) are distributed along the steel beams (4) on the inner side surfaces of all sections of the A-level parapets (2-1) according to preset intervals, each sound insulation screen steel column (3) is respectively fixed with a steel beam (4) at the position where the steel beam is arranged in a butt joint mode in a vertical posture and the side surface, distances between each sound-proof screen steel column (3) and the inner side face of the top of the A-level parapet (2-1) at the position where the sound-proof screen steel columns are arranged are equal to each other, and the tops of the sound-proof screen steel columns (3) are located at the same height;
the inner side surfaces of the frame columns (1) connected with the A-level parapet walls (2-1) are respectively and fixedly connected with sound insulation screen steel columns (3), each sound insulation screen steel column (3) is in a vertical posture, the distances between each sound insulation screen steel column (3) and the inner side surfaces of the frame columns (1) connected with the sound insulation screen steel columns are equal to each other, and the tops of the sound insulation screen steel columns (3) are located at the same height;
the distances between the sound insulation screen steel columns (3) arranged at the positions of the A-grade parapets (2-1) and the frame columns (1) connected with the A-grade parapets and the surface of the inner side face of the top of the A-grade parapets (2-1) at the positions are equal, and the tops of the sound insulation screen steel columns (3) are located at the same height;
projections of the steel beams (4) at adjacent positions in the vertical direction are butted with each other along the edge of the existing building roof in a circle in all the steel beams (4); in all the sound insulation screen steel columns (3), the distances between each sound insulation screen steel column (3) and the surface of the inner side face of the top of the parapet wall (2) corresponding to the sound insulation screen steel column (3) are equal, and the tops of all the sound insulation screen steel columns (3) are located at the same height; along existing building roof border a week, based on each sound-proof screen steel column (3), set up the system acoustic celotex board.
2. A roof sound-proof screen structure of an existing building according to claim 1, wherein: and the inner side surfaces of the frame columns (1) which are connected with the A-level parapet (2-1) and the B-level parapet (2-2) are respectively and fixedly connected with secondary supporting steel columns (9-2) in vertical postures, and the secondary supporting steel columns (9-2) are respectively and fixedly connected with the corresponding end parts of the two steel beams (4) on the side of the B-level parapet (2-2) corresponding to the arranged positions of the secondary supporting steel columns.
3. A roof sound-proof screen structure of an existing building according to claim 2, wherein: the roof structure is characterized by further comprising each inclined strut steel (10) corresponding to each main strut steel column (9-1), wherein one end of each inclined strut steel (10) is fixedly butted with the top end of the corresponding main strut steel column (9-1), each inclined strut steel (10) is located on one side, back to the edge of the existing building roof, of the corresponding main strut steel column (9-1), the other end of each inclined strut steel (10) is fixedly butted with the top surface of a building with the roof surface formed by the corresponding main strut steel column (9-1), and each inclined strut steel (10) is coplanar with the corresponding main strut steel column (9-1).
4. A roof sound-proof screen structure of an existing building according to claim 3, wherein: the main supporting steel columns (9-1) and the diagonal supporting steel columns (10) are fixedly connected with the top surface of the roof surface building through concrete pier (11) arranged on the top surface of the roof surface building.
5. The existing building roof sound-proof screen structure of claim 4, wherein: each sound insulation screen steel column (3) arranged corresponding to each section of A-level parapet (2-1) is fixedly connected with the steel beam (4) at the arranged position on the side surface, and the side surface of each sound insulation screen steel column (3) is fixedly butted with the inner concave surface of the A-level parapet (2-1) at the corresponding position through a short connecting steel (5) and a node plate (8);
the side surfaces of the secondary supporting steel columns (9-2) are fixedly connected with the inner side surfaces of the corresponding frame columns (1) through an upper position and a lower position respectively, and the inner side surfaces of the corresponding frame columns (1) are fixedly butted with the secondary supporting steel columns (9-2) through short connecting steel (5) and a node plate (8) at the upper position and the lower position respectively.
6. The existing building roof sound-proof screen structure of claim 5, wherein: each sound insulation screen steel column (3) fixedly butted with each steel beam (4) is butted with the corresponding steel beam (4) through a connecting plate (6) by bolts (7);
each sound-proof screen steel column (3) connected with the inner side surface of each frame column (1) is fixedly connected with the inner side surface of the corresponding frame column (1) through an upper position and a lower position respectively, and each sound-proof screen steel column (3) is fixedly connected with the inner side surface of the corresponding frame column (1) through a connecting plate (6) and a gusset plate (8) in sequence at the upper position and the lower position respectively.
7. The existing building roof sound-proof screen structure of claim 6, wherein: the system sound insulation board based on each sound insulation screen steel column (3) is arranged along the edge of the existing building roof to the center direction of the existing building roof, and sequentially comprises a perforated sound insulation board (12), a hole aluminum alloy sound insulation board (13) and an aluminum alloy sound absorption board (14).
8. The existing building roof sound-proof screen structure of claim 6, wherein: the aluminum alloy sound insulation board (13) with holes is attached to the hollow-out position of the concave surface on the inner side of each section of parapet (2), and the aluminum alloy sound absorption boards (14) are attached to the concave surfaces on the inner sides of the other sections of parapets (2).
9. A construction method of an existing building roof sound-proof screen structure according to any one of claims 1 to 8, comprising the steps of:
step A, based on the height of a building on the roof-out surface of the existing building roof, determining the designed height positions h of the tops of all the sound-proof screen steel columns (3), determining the preset lower limit height position higher than the top height of the well of the existing building roof, and determining the distance p between each sound-proof screen steel column (3) and the surface of the inner side surface of the top of the parapet (2) at the set position;
step B, aiming at parapet walls (2) between each group of adjacent frame columns (1) at the periphery of the edge of the existing building roof, dividing the parapet walls without roof buildings between wall spans into A-level parapet walls (2-1), and dividing the rest parapet walls (2) into B-level parapet walls (2-2);
c, horizontally and fixedly arranging steel beams (4) aiming at preset lower limit height positions of concave surfaces on the inner sides of all sections of the class-A parapets (2-1), and fixedly butting the inner side surfaces of frame columns (1) on two sides of the class-A parapets (2-1) at two ends of each steel beam (4) respectively;
d, respectively arranging each sound-proof screen steel column (3) along the steel beam (4) on the inner side surface of each section of the A-level parapet (2-1) according to a preset interval distribution, fixedly butting the steel beam (4) at the set position on the side surface of each sound-proof screen steel column (3) in a vertical posture, and simultaneously fixedly butting the side surface of each sound-proof screen steel column (3) with the inner concave surface of the corresponding position A-level parapet (2-1) respectively, keeping the distance between each sound-proof screen steel column (3) and the inner side surface of the top of the A-level parapet (2-1) at the set position to be p, and keeping the top height of each sound-proof screen steel column (3) to reach a designed height position h;
e, fixedly connecting sound-proof screen steel columns (3) to the inner side surfaces of the frame columns (1) connected with the A-level parapet walls (2-1), wherein the sound-proof screen steel columns (3) are in vertical postures, the distances between the sound-proof screen steel columns (3) and the inner side surfaces of the frame columns (1) connected with the sound-proof screen steel columns are distances p, and the top heights of the sound-proof screen steel columns (3) reach design height positions h;
step F, respectively aiming at the building with the roof surface at the position of each section of the B-level parapet wall (2-2), the following processes are carried out:
firstly, all main supporting steel columns (9-1) are distributed and fixedly arranged along the edge of the top surface of a building on the roof surface, which corresponds to the edge of the roof of the existing building, according to preset intervals, and all the main supporting steel columns (9-1) are in a vertical posture and are coplanar with each other;
then arranging two steel beams (4) in a horizontal posture according to a preset vertical upper-lower height position to be respectively butted with each main supporting steel column (9-1);
finally, arranging each sound-proof screen steel column (3) along the two steel beams (4) according to a preset interval distribution, wherein the sound-proof screen steel columns (3) are fixedly butted with the upper steel beam (4) and the lower steel beam (4) at the arranged positions respectively in a vertical posture and on the side surfaces, the distance between each sound-proof screen steel column (3) and the surface where the inner side surface of the top of the B-grade parapet (2-2) at the arranged position is p, and the top height of each sound-proof screen steel column (3) reaches a designed height position h;
based on the completion of the execution process of the roof surface buildings at the positions of the B-level parapets (2-2) of each section, the obtained steel beams (4) corresponding to the roof surface buildings and the steel beams (4) corresponding to the A-level parapets (2-1) of each section are in butt joint with each other in the vertical direction of the adjacent steel beams (4) along the edge of the existing building roof;
g, aiming at each frame column (1) which is simultaneously connected with the A-level parapet wall (2-1) and the B-level parapet wall (2-2), respectively and fixedly connecting secondary support steel columns (9-2) in vertical postures on the inner side surfaces of the frame columns (1), and respectively and fixedly connecting the secondary support steel columns (9-2) with the corresponding end parts of two steel beams (4) on the side of the B-level parapet wall (2-2) corresponding to the set positions of the secondary support steel columns;
and H, arranging a system sound insulation board along the edge of the existing building roof for one circle based on each sound insulation screen steel column (3).
10. The construction method of the existing building roof sound-proof screen structure according to claim 9, characterized in that: step I is also included, after the step H is executed, step I is carried out;
step I, respectively sticking hole aluminum alloy sound insulation plates (13) aiming at the hollow positions of the inner side concave surfaces of all the sections of parapet walls (2), and respectively sticking aluminum alloy sound absorption plates (14) aiming at the inner side concave surfaces of the rest sections of parapet walls (2).
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