CN110645696A - Heating and ventilation static pressure box structure and construction method thereof - Google Patents
Heating and ventilation static pressure box structure and construction method thereof Download PDFInfo
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- CN110645696A CN110645696A CN201910952809.7A CN201910952809A CN110645696A CN 110645696 A CN110645696 A CN 110645696A CN 201910952809 A CN201910952809 A CN 201910952809A CN 110645696 A CN110645696 A CN 110645696A
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- pressure box
- bottom plate
- box structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/22—Means for preventing condensation or evacuating condensate
- F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Abstract
A heating and ventilation static pressure box structure and a construction method thereof comprise a stand ladder, a vertical component, an air supply pipe, a steel skeleton, a suspender and a static pressure box bottom plate; the stand ladder, the vertical component and the static pressure box bottom plate enclose a sealed space; air supply outlets are arranged on the vertical side surface of the stand ladder at intervals along the longitudinal direction; the lower surface of the stand ladder is provided with a first heat preservation layer, a steel wire mesh and a mortar layer; the steel skeleton comprises an inclined section frame and a horizontal section frame; the upper end and the lower end of the steel skeleton are respectively connected with the vertical component on the corresponding side through a first connecting piece; the upper end of the suspender is connected to the vertical side surface of the grandstand ladder through a second connecting piece, and the lower end of the suspender is connected with the steel framework; the static pressure box bottom plate is laid on the top surface of the steel skeleton and comprises a bottom panel, a second heat insulation layer and a top panel which are sequentially arranged from bottom to top. The invention solves the technical problems that the traditional static pressure box structure is easy to generate cold and hot bridges, flying flocs and noise, generates energy loss, forms condensed water and is difficult to construct and operate in a narrow space.
Description
Technical Field
The invention relates to the field of decoration engineering, in particular to a heating and ventilation static pressure box structure and a construction method thereof.
Background
The audience area of a training hall of a certain project is provided with step seats, air supplied by an air conditioner is sent out from a main air pipe, passes through a static pressure box and is sent out by a swirl air port with air volume adjusting function under each step seat. In order to ensure the comfort of audience area viewing and to avoid the generation of back wind and strong blowing feeling, the static pressure box air supply system is required to have the basic functions of large air supply quantity, no cold bridge and low noise. The original design adopts a static pressure box with a reinforced concrete structure, wherein the bottom plate is a reinforced concrete bottom plate with the thickness of 150, and the bottom plate also has the function of a fire-proof partition wall; the disadvantages of this configuration are as follows: (1) the structure of heat preservation, protection and noise reduction is lacked, and a cold and hot bridge, flying wadding and noise are formed; (2) the cold and heat of the air flow in the static pressure box are exchanged with the reinforced concrete structure, so that the phenomena of loss, formation of condensed water and the like are generated; (3) the space of the static pressure box is narrow, no operation space exists in molding and internal construction, the vertical height of the internal space is only 700 mm, the total length is about 4300 mm, and the static pressure box is of a step type, so that the concrete formwork and the frame body cannot be detached in the future, and an internal heat insulation protective layer cannot be constructed.
Disclosure of Invention
The invention aims to provide a heating and ventilation static pressure box structure and a construction method thereof, and aims to solve the technical problems that a traditional static pressure box structure is easy to generate cold and hot bridges, flying flocs and noise, generates energy loss, forms condensed water and is difficult to construct and operate due to narrow space.
In order to achieve the purpose, the invention adopts the following technical scheme.
A heating and ventilation static pressure box structure is arranged at the bottom of a spectator area stand and comprises a stand ladder, vertical members positioned around the stand ladder, an air supply pipe, a steel skeleton, a hanging rod and a static pressure box bottom plate; the stand ladder, the vertical component and the static pressure box bottom plate jointly enclose a sealed space; air supply outlets are longitudinally arranged on the vertical side surface of each stand ladder at intervals; a first heat preservation layer, a steel wire mesh and a mortar layer are sequentially arranged on the lower surface of the stand ladder from inside to outside; the air supply pipe is connected to the vertical component on one side of the top of the step of the stand and used for supplying air to the sealed space; the steel skeleton is arranged right below the steps of the stand and comprises an inclined section framework and a horizontal section framework connected to the lower end of the inclined section framework; the upper end and the lower end of the steel skeleton are respectively connected with the vertical component on the corresponding side through a first connecting piece; the hanger rods are provided with a plurality of groups, the groups correspond to the vertical side surfaces of the platform ladder, and each group of hanger rods are arranged at intervals along the longitudinal direction; the upper end of the suspender is connected to the vertical side surface of the step of the stand through a second connecting piece, and the lower end of the suspender is connected with the steel framework; the static pressure box bottom plate is laid on the top surface of the steel skeleton and comprises a bottom panel, a second heat insulation layer and a top panel which are sequentially arranged from bottom to top; the peripheral edge of the second heat-insulating layer exceeds the peripheral edges of the bottom panel and the top panel and extends upwards to be attached to the vertical component on the corresponding side.
Preferably, the vertical member is a wall or a structural beam or a structural column.
Preferably, the upper end of the blast pipe is connected with the vertical component, and the lower end of the blast pipe is connected with an air supply system; the blast pipe is provided with a fire-proof valve and a regulating valve.
Preferably, the first connecting piece comprises a first connecting plate and a first embedded piece; the first connecting plate is vertically connected to the upper end of the steel skeleton; at least two first embedded parts are arranged at intervals along the longitudinal direction; every first piece that buries all is C shape, and the perpendicular limit and the first connecting plate fixed connection of first piece that buries, two horizontal limits of first piece that bury perpendicular to the face of first connecting plate, and bury underground in the vertical component of the vertical side one side of the stand ladder that corresponds.
Preferably, the second connecting piece comprises a second connecting plate and a second embedded piece; the second connecting plate is vertically connected to the top of the hanging rod; at least two second embedded parts are arranged at intervals along the longitudinal direction; every second buries the piece and all is C shape, and the second buries the perpendicular limit of piece and second connecting plate fixed connection, and two horizontal limits of the second piece of burying are perpendicular to the face of second connecting plate, and bury underground in the vertical side of the stand ladder that corresponds.
Preferably, the inclined section frame comprises a first main keel and a first secondary keel; the first main keels are arranged in a group and are longitudinally arranged in parallel at intervals; each first main keel is obliquely arranged, and the inclination angle is 0-90 degrees; the first keels are provided with a plurality of groups, and each group of first keels is correspondingly connected between the adjacent first main keels; the horizontal section frame comprises a second main keel and a second secondary keel; the second main keels are arranged in parallel along the longitudinal direction at intervals, and are correspondingly connected to the lower ends of the first main keels; the second keel has a plurality of groups, and every group second keel corresponds and connects between adjacent second main joist.
The construction method of the heating and ventilation static pressure box structure comprises the following steps.
Step one, carrying out structural treatment and leveling on the lower surface of a concrete slab of the grandstand ladder.
And step two, sequentially arranging a first heat preservation layer, a steel wire mesh and a mortar layer from inside to outside on the lower surface of the stand ladder.
Thirdly, positioning and paying off; the outer contour line of the static pressure box structure and the axial dimension of the static pressure box structure are determined, a level gauge is used for guiding the static pressure box structure to the poured vertical component, and the horizontal line is popped up.
Step four, installing a suspender: and (3) pulling through the wire before the hanging rods are installed, so that the hanging rod connection points on the vertical side surfaces of the grandstand ladder are in a straight line, and correspondingly connecting each group of hanging rods on the vertical side surfaces of the grandstand ladder.
And fifthly, performing heat preservation treatment on the suspender.
Sixthly, manufacturing and installing a steel skeleton; the steel skeleton is formed by correspondingly welding an inclined section frame and a horizontal section frame, and the inclined section frame and the horizontal section frame are both of rectangular lattice structures; the upper end edge and the lower end edge of the steel skeleton are respectively connected with the vertical component on the corresponding side through the first connecting piece, and the group of hanging rods is correspondingly welded with the steel skeleton.
And step seven, checking and accepting the steel skeleton.
Step eight, manufacturing a static pressure box bottom plate; the static pressure box bottom plate is formed by splicing a group of static pressure box bottom plate units, the size of each static pressure box bottom plate unit is matched with the size of a sash in the steel framework, and the error between the size of each static pressure box bottom plate unit and the design size is not more than 5mm, so that the tightness between the static pressure box bottom plate units during assembly is ensured.
Step nine, mounting a static pressure box bottom plate: comprises the connection of a static pressure box bottom plate and a steel skeleton and the seam processing of the static pressure box bottom plate.
Step ten, checking and accepting the bottom plate of the static pressure box.
Step eleven, processing the seam: in order to ensure the sealing performance of the static pressure box structure, sealing strips with the width not less than 100mm are laid at the joint of the bottom plate unit of the static pressure box, and the sealing strips are laid along the whole length of the plate joint; and laying a sealing strip with the width not less than 100mm at the joint of the static pressure box bottom plate and the vertical member, wherein the sealing strip is laid along the whole length of the joint.
Step twelve, integrally checking and accepting the static pressure box structure: the overall acceptance of the static pressure box structure comprises the firmness acceptance of the static pressure box structure and the sealing acceptance of the static pressure box structure.
Step thirteen, spraying fireproof paint to the static pressure box structure: and after the static pressure box structure is qualified, spraying fireproof coating on the static pressure box structure, and finishing construction.
Preferably, in the fourth step, the suspender is connected to the vertical side surface of the stand ladder through the second connecting piece; the second connecting piece comprises a second connecting plate and a second embedded piece; the second embedded part is embedded in the step of the stand, and the second connecting plate is connected to the top of the suspender; and when the suspender is installed, the second connecting plate is welded with the second embedded part.
Preferably, in the sixth step, the first connecting member includes a first connecting plate and a first embedded member; the first embedded part is embedded in the vertical component on the corresponding side, and the first connecting plates are respectively connected to the upper end edge and the lower end edge of the steel skeleton at intervals; when the steel framework is installed, the first connecting plate is connected with the first embedded part in a welding mode.
Preferably, in the step ten, the firmness of the static pressure box structure is checked and accepted specifically as follows: after the static pressure box bottom plate is installed, placing a heavy object on the static pressure box bottom plate unit, and standing for 48 hours; if the hanger rod and the steel skeleton are not deformed and damaged, the structure can bear heavy objects with corresponding mass;
the tightness acceptance check of the static pressure box structure specifically comprises the following steps: irradiating the inner side of the static pressure box bottom plate by using a strong light lamp, wherein no light is transmitted at the joint; and then, a high-pressure blower is used for supplying air from the bottom plate of the plenum box to the joint, a probe of the handheld anemometer is close to the plate joint, and the anemometer displays that the wind speed is zero, so that the sealing performance of the plenum box structure meets the requirement.
Compared with the prior art, the invention has the following characteristics and beneficial effects.
1. Audience area ladder seat below space is narrow and small, the shape differs, and traditional metal tuber pipe and the heat preservation construction degree of difficulty are very big, can't be connected the supply-air outlet and the air supply trunk line of seat, and the furred ceiling of ladder seat below is decorated simultaneously, is given the hoist and mount of water drainage pipeline, electric crane span structure and relevant equipment and also has fixed difficult problem. The invention effectively reduces the construction difficulty and creates a comfortable competition environment for audience areas by means of standardized professional construction, field manufacture, field assembly, node processing and the like.
2. The static pressure box structure adopts conventional materials such as galvanized steel plates, channel steel, angle steel and the like, effectively reduces the construction difficulty, is beneficial to combining prefabricated processing of a standard workpiece factory with field processing of special-shaped workpieces, can be more suitable for the irregularity of the bottom space of the stand, effectively ensures the construction period of the project, reduces the labor and mechanical cost in the construction process, and simultaneously reduces the material loss; meanwhile, the static pressure box structure effectively saves the building space, improves the ceiling height and solves the problem of fixing the decorative ceiling, the electromechanical pipeline and the equipment hanger.
3. The bottom plate of the static pressure box in the static pressure box structure consists of a bottom plate, a second heat insulation layer and a top plate, and the lower surface of the stand ladder is sequentially provided with a first heat insulation layer, a steel wire mesh sheet and a mortar layer from inside to outside.
4. The static pressure box structure can change partial dynamic pressure into static pressure to blow air farther, reduce noise, uniformly distribute air quantity, reduce noise, obtain uniform static pressure air outlet and reduce dynamic pressure loss.
5. The steel framework in the static pressure box structure adopts a mode of combining channel steel and angle steel, and can provide a support mounting point for other specialties on the basis of meeting the construction requirement of the static pressure box structure.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic cross-sectional view of a warm-ventilation plenum configuration of the present invention.
FIG. 2 is a schematic structural diagram of the steel skeleton of the present invention.
FIG. 3 is a schematic view of the joint structure of the steel skeleton and the vertical member according to the present invention.
Fig. 4 is a schematic structural view of a connecting node of a hanger bar and a grandstand ladder according to the present invention.
Fig. 5 is a schematic structural view of a static pressure tank bottom plate in the invention.
Fig. 6 is a schematic structural view of a first connecting member according to the present invention.
Reference numerals: 1-grandstand ladder, 2-vertical member, 3-blast pipe, 4-steel skeleton, 4.1-inclined section frame, 4.1.1-first main keel, 4.1.2-first keel, 4.2-horizontal section frame, 4.2.1-second main keel, 4.2.2-second keel, 5-suspender, 6-static pressure tank bottom plate, 6.1-bottom plate, 6.2-second heat preservation layer, 6.3-top panel, 7-air supply outlet, 8-first heat preservation layer, 9-steel wire mesh, 10-mortar layer, 11-first connecting piece, 11.1-first connecting plate, 11.2-first buried piece, 12-second connecting piece, 12.1-second connecting plate, 12.2-second buried piece, 13-fire prevention valve, 14-adjusting valve.
Detailed Description
As shown in fig. 1-6, the heating and ventilating static pressure box structure is arranged at the bottom of a spectator area stand and comprises a stand ladder 1, a vertical member 2 positioned around the stand ladder 1, an air supply pipe 3, a steel skeleton 4, a suspender 5 and a static pressure box bottom plate 6; the stand ladder 1, the vertical component 2 and the static pressure box bottom plate 6 jointly enclose a sealed space; air supply outlets 7 are formed in the vertical side face of each stand ladder 1 at intervals along the longitudinal direction; a first heat preservation layer 8, a steel wire mesh sheet 9 and a mortar layer 10 are sequentially arranged on the lower surface of the stand ladder 1 from inside to outside; the air supply pipe 3 is connected to the vertical component 2 on one side of the top of the stand ladder 1 and used for supplying air to the sealed space; the steel skeleton 4 is arranged right below the grandstand ladder 1 and comprises an inclined section frame 4.1 and a horizontal section frame 4.2 connected to the lower end of the inclined section frame 4.1; the upper end and the lower end of the steel skeleton 4 are respectively connected with the vertical component 2 on the corresponding side through a first connecting piece 11; the hanger rods 5 are provided with a plurality of groups and are arranged corresponding to the vertical side surfaces of the grandstand ladder 1, and each group of hanger rods 5 is arranged at intervals along the longitudinal direction; the upper end of the suspender 5 is connected to the vertical side surface of the stand ladder 1 through a second connecting piece 12, and the lower end of the suspender 5 is connected with the steel framework 4; the static pressure box bottom plate 6 is laid on the top surface of the steel skeleton 4 and comprises a bottom panel 6.1, a second heat preservation layer 6.2 and a top panel 6.3 which are sequentially arranged from bottom to top; the peripheral edge of the second heat-insulating layer 6.2 exceeds the peripheral edges of the bottom panel 6.1 and the top panel 6.3, and extends upwards to be attached to the vertical member 2 on the corresponding side.
In this embodiment, the vertical member 2 is a wall, a structural beam, or a structural column.
In this embodiment, the air supply opening 7 is formed in the vertical side surface of the stand step 1 at a position close to the bottom of the vertical side surface, so as to prevent the occurrence of a back wind and a strong blowing feeling.
In the embodiment, the first heat preservation layer 8 is a rock wool heat preservation plate, and the thickness is 25 mm-35 mm; the mortar layer 10 is a polymer mortar layer with the thickness of 8-12 mm.
In this embodiment, the first heat preservation layer 8, the steel wire mesh sheet 9 and the mortar layer 10 are all provided with holes at positions corresponding to the air supply opening 7.
In the embodiment, the upper end of the blast pipe 3 is connected with the vertical component 2, and the lower end of the blast pipe 3 is connected with an air supply system; the blast pipe 3 is provided with a fire damper 13 and a regulator valve 14.
In this embodiment, the first connecting element 11 includes a first connecting plate 11.1 and a first embedded element 11.2; the first connecting plate 11.1 is vertically connected to the upper end of the steel framework 4; at least two first embedded parts 11.2 are arranged at intervals along the longitudinal direction; every first piece 11.2 that buries all is the C shape, and the perpendicular limit and the first connecting plate 11.1 fixed connection of first piece 11.2 that buries, two horizontal limits of first piece 11.2 that bury are perpendicular to the face of first connecting plate 11.1, and bury underground in the vertical member 2 of the vertical side one side of corresponding stand ladder 1.
In this embodiment, the second connecting member 12 includes a second connecting plate 12.1 and a second embedded member 12.2; the second connecting plate 12.1 is vertically connected to the top of the suspender 5; at least two second embedded parts 12.2 are arranged at intervals along the longitudinal direction; each second embedded part 12.2 is C-shaped, the vertical edges of the second embedded parts 12.2 are fixedly connected with the second connecting plate 12.1, and the two transverse edges of the second embedded parts 12.2 are perpendicular to the plate surface of the second connecting plate 12.1 and embedded in the vertical side surface of the corresponding stand ladder 1.
In this embodiment, the inclined section frame 4.1 includes a first main keel 4.1.1 and a first secondary keel 4.1.2; the first main keels 4.1.1 are provided with a group and are arranged in parallel at intervals along the longitudinal direction; each first main keel is arranged in an inclined manner at 4.1.1 degrees, and the inclination angle is 0-90 degrees; the first keels 4.1.2 are provided with a plurality of groups, and each group of first keels 4.1.2 is correspondingly connected between the adjacent first main keels 4.1.1; the horizontal section frame 4.2 comprises a second main keel 4.2.1 and a second secondary keel 4.2.2; the second main keels 4.2.1 are arranged in a group and are longitudinally arranged in parallel at intervals, and the second main keels 4.2.1 are correspondingly connected to the lower ends of the first main keels 4.1.1; the second keel 4.2.2 has a plurality of groups, and every group of second keel 4.2.2 is correspondingly connected between adjacent second main keels 4.2.1.
In this embodiment, the first main joist 4.1.1 and the second main joist 4.2.1 are both made of channel steel, and the first secondary joist 4.1.2 and the second secondary joist 4.2.2 are both made of angle steel.
Of course, in other embodiments, the first main keel 4.1.1 and the second main keel 4.2.1 can also be made of rectangular section steel, i-shaped steel or H-shaped steel; the first secondary keel 4.1.2 and the second secondary keel 4.2.2 may also be made of rectangular section steel or i-steel or H-steel.
In this embodiment, the bottom panel 6.1 is a calcium silicate board with a thickness of not less than 15mm, the top panel 6.3 is a calcium silicate board with a thickness of not less than 9mm, and the second heat preservation layer 6.2 is heat preservation rock wool with a thickness of 40-60 mm.
The construction method of the heating and ventilation static pressure box structure comprises the following steps.
Step one, carrying out structural treatment and leveling on the lower surface of a concrete slab of the grandstand ladder 1.
And step two, sequentially arranging a first heat preservation layer 8, a steel wire mesh sheet 9 and a mortar layer 10 on the lower surface of the stand ladder 1 from inside to outside.
Thirdly, positioning and paying off; the outer contour line of the static pressure box structure and the axial dimension of the static pressure box structure are determined, a level gauge is used for guiding the static pressure box structure to the poured vertical component 2, and a horizontal line is popped up to control the elevation of each step of the process.
Step four, mounting the suspender 5: the wire is pulled through before the suspender 5 is installed, so that the suspender 5 connection points on the vertical side surface of the grandstand ladder 1 are on a straight line, each group of suspenders 5 is correspondingly connected on the vertical side surface of the grandstand ladder 1, and in the construction process, the suspender 5 is strictly required to be constructed basically according to the drawing, so that the suspender is stressed uniformly.
And step five, in order to prevent the hanger rod 5 in the static pressure box from forming a cold bridge and generating condensation, carrying out heat preservation treatment on the hanger rod 5.
Sixthly, manufacturing and mounting the steel skeleton 4; the steel skeleton 4 is formed by correspondingly welding an inclined section frame 4.1 and a horizontal section frame 4.2, and the inclined section frame 4.1 and the horizontal section frame 4.2 are both in rectangular lattice structures; the upper end edge and the lower end edge of the steel skeleton 4 are respectively connected with the vertical component 2 on the corresponding side through a first connecting piece 11, and a group of suspenders 5 are correspondingly welded and connected with the steel skeleton 4; in the work progress, will pay attention to the tuber pipe, electric pipe, water pipe, fire control pipe and the furred ceiling etc. of considering static pressure case structure below, increase hoisting point quantity according to positions such as tuber pipe, electric pipe, water pipe, fire control pipe and furred ceiling along the major axis of the vertical side of stand ladder 1 to be used for tuber pipe, electric pipe, water pipe, fire control pipe and furred ceiling etc. of fixed static pressure case structure below.
And step seven, checking and accepting the steel skeleton 4.
Step eight, manufacturing a bottom plate 6 of the static pressure box; the static pressure box bottom plate 6 is formed by splicing a group of static pressure box bottom plate units, the size of each static pressure box bottom plate unit is matched with the size of a sash in the steel framework 4, and the error between the size of each static pressure box bottom plate unit and the design size is not more than 5mm, so that the tightness between the static pressure box bottom plate units during assembly is ensured.
Step nine, mounting the static pressure box bottom plate 6: comprises the connection of a static pressure box bottom plate 6 and a steel skeleton 4 and the seam processing of the static pressure box bottom plate 6; before installation, the manufactured static pressure box bottom plate unit is marked with nail lines at intervals of 100 mm.
Step ten, acceptance of the bottom plate 6 of the static pressure box.
Step eleven, processing the seam: in order to ensure the sealing performance of the static pressure box structure, a sealing strip with the width not less than 100mm is laid at the joint of the bottom plate unit of the static pressure box, the sealing strip is laid along the whole length of the plate joint, and is sealed by fireproof sealing glue; and (3) laying a sealing strip with the width not less than 100mm at the joint of the static pressure box bottom plate 6 and the vertical member 2, laying the sealing strip along the whole length of the joint, and sealing by using fireproof sealant.
Step twelve, integrally checking and accepting the static pressure box structure: the overall acceptance of the static pressure box structure comprises the firmness acceptance of the static pressure box structure and the sealing acceptance of the static pressure box structure.
Step thirteen, spraying fireproof paint to the static pressure box structure: and after the static pressure box structure is qualified, spraying fireproof coating on the static pressure box structure, wherein the fireproof coating meets the fire resistance limit requirement of the project until the construction is finished.
In the fourth step, the suspension rod 5 is connected to the vertical side surface of the stand ladder 1 through the second connecting piece 12; the second connecting piece 12 comprises a second connecting plate 12.1 and a second embedded piece 12.2; the second embedded part 12.2 is embedded in the grandstand ladder 1, and the second connecting plate 12.1 is connected to the top of the suspender 5; when the suspender 5 is installed, the second connecting plate 12.1 is welded with the second embedded part 12.2; the longitudinal distance between the suspenders 5 is not more than 1 m;
in the sixth step, the first connecting piece 11 comprises a first connecting plate 11.1 and a first embedded piece 11.2; the first embedded parts 11.2 are embedded in the vertical members 2 on the corresponding side, and the first connecting plates 11.1 are respectively connected to the upper end edge and the lower end edge of the steel skeleton 4 at intervals; when the steel framework 4 is installed, the first connecting plate 11.1 and the first embedded part 11.2 are connected in a welding mode.
In this embodiment, in the tenth step, the firmness of the static pressure box structure is specifically checked and accepted as follows: after the static pressure box bottom plate 6 is installed, placing a heavy object on a static pressure box bottom plate unit, and standing for 48 hours; if the hanger rod 5 and the steel framework 4 are not deformed and damaged, the structure can bear heavy objects with corresponding mass;
the tightness acceptance check of the static pressure box structure specifically comprises the following steps: irradiating the inner side of the bottom plate 6 of the static pressure box by using a strong light lamp, wherein no light is transmitted at the joint; then, a high-pressure blower is used for supplying air from the inside of the bottom plate 6 of the static pressure box to the joint, the ignited smoke head is close to the outer side of the plate joint, and the smoke is not obviously blown away, so that the sealing performance of the static pressure box structure meets the requirement.
In the ninth embodiment, in the step, when the static pressure box bottom plate 6 is installed, holes need to be drilled on the steel skeleton 4, the positions to be connected are glued after the surface of the steel skeleton 4 is cleaned, and then the positions are fixed through rivet pulling.
In the embodiment, the inclined section frame 4.1 is formed by welding a first main keel 4.1.1 and a first secondary keel 4.1.2, the first main keel 4.1.1 is welded by double-sided full welding, and the horizontal section frame 4.2 is formed by welding a second main keel 4.2.1 and a second secondary keel 4.2.2; when the keel block is installed, a through line is pulled on the vertical component 2 on the corresponding side along the horizontal direction, a group of first main keels 4.1.1 are controlled to be on the same plane, and a group of second main keels 4.2.1 are controlled to be on the same plane; after the installation is finished, carefully checking whether the elevations, the sizes and the positions of the first main keel 4.1.1 and the second main keel 4.2.2 are accurate or not; after passing the inspection, the steel skeleton 4 is subjected to rust prevention treatment by using red rust-proof paint.
The above embodiments are not intended to be exhaustive or to limit the invention to other embodiments, and the above embodiments are intended to illustrate the invention and not to limit the scope of the invention, and all applications that can be modified from the invention are within the scope of the invention.
Claims (10)
1. A heating and ventilation static pressure box structure is arranged at the bottom of a spectator area stand and comprises a stand ladder (1), vertical members (2) positioned around the stand ladder (1), an air supply pipe (3), a steel skeleton (4), a suspender (5) and a static pressure box bottom plate (6); the stand ladder (1), the vertical component (2) and the static pressure box bottom plate (6) jointly enclose a sealed space; the method is characterized in that: air supply outlets (7) are arranged on the vertical side surface of each stand ladder (1) at intervals along the longitudinal direction; a first heat preservation layer (8), a steel wire mesh (9) and a mortar layer (10) are sequentially arranged on the lower surface of the stand ladder (1) from inside to outside; the air supply pipe (3) is connected to the vertical component (2) on one side of the top of the stand ladder (1) and used for supplying air to the sealed space; the steel skeleton (4) is arranged right below the grandstand ladder (1) and comprises an inclined section framework (4.1) and a horizontal section framework (4.2) connected to the lower end of the inclined section framework (4.1); the upper end and the lower end of the steel skeleton (4) are respectively connected with the vertical component (2) on the corresponding side through a first connecting piece (11); the hanger rods (5) are provided with a plurality of groups, the groups correspond to the vertical side surfaces of the grandstand ladder (1), and the hanger rods (5) of each group are arranged at intervals along the longitudinal direction; the upper end of the suspender (5) is connected to the vertical side surface of the stand ladder (1) through a second connecting piece (12), and the lower end of the suspender (5) is connected with the steel skeleton (4); the static pressure box bottom plate (6) is laid on the top surface of the steel skeleton (4) and comprises a bottom panel (6.1), a second heat insulation layer (6.2) and a top panel (6.3) which are sequentially arranged from bottom to top; the peripheral edge of the second heat-insulating layer (6.2) exceeds the peripheral edges of the bottom panel (6.1) and the top panel (6.3), and extends upwards to be attached to the vertical component (2) on the corresponding side.
2. The hvac plenum box structure of claim 1, wherein: the vertical member (2) is a wall body or a structural beam or a structural column.
3. The hvac plenum box structure of claim 1, wherein: the upper end of the blast pipe (3) is connected with the vertical component (2), and the lower end of the blast pipe (3) is connected with an air supply system; the blast pipe (3) is provided with a fire damper (13) and a regulating valve (14).
4. The hvac plenum box structure of claim 1, wherein: the first connecting piece (11) comprises a first connecting plate (11.1) and a first embedded piece (11.2); the first connecting plate (11.1) is vertically connected to the upper end of the steel framework (4); at least two first embedded parts (11.2) are arranged at intervals along the longitudinal direction; every first piece (11.2) of burying all is the C shape, and the perpendicular limit and first connecting plate (11.1) fixed connection of first piece (11.2) of burying, and two horizontal limits of first piece (11.2) of burying are perpendicular to the face of first connecting plate (11.1), and bury underground in vertical component (2) of the vertical side one side of corresponding stand ladder (1).
5. The hvac plenum box structure of claim 1, wherein: the second connecting piece (12) comprises a second connecting plate (12.1) and a second embedded piece (12.2); the second connecting plate (12.1) is vertically connected to the top of the suspender (5); at least two second embedded parts (12.2) are arranged at intervals along the longitudinal direction; every second buries piece (12.2) and all is the C shape, and the perpendicular limit and second connecting plate (12.1) fixed connection of second buries piece (12.2), and two horizontal limits of second buries piece (12.2) perpendicular to the face of second connecting plate (12.1), and bury in the vertical side of corresponding stand ladder (1).
6. The hvac plenum box structure of claim 1, wherein: the inclined section frame (4.1) comprises a first main keel (4.1.1) and a first secondary keel (4.1.2); the first main keels (4.1.1) are provided with one group and are arranged at intervals in parallel along the longitudinal direction; each first main keel (4.1.1) is obliquely arranged, and the inclination angle is 0-90 degrees; the first keels (4.1.2) are provided with a plurality of groups, and each group of first keels (4.1.2) is correspondingly connected between the adjacent first main keels (4.1.1); the horizontal section frame (4.2) comprises a second main keel (4.2.1) and a second secondary keel (4.2.2); the second main keels (4.2.1) are arranged in a group and are longitudinally arranged in parallel at intervals, and the second main keels (4.2.1) are correspondingly connected to the lower ends of the first main keels (4.1.1); the second keel (4.2.2) is provided with a plurality of groups, and each group of second keel (4.2.2) is correspondingly connected between the adjacent second main keels (4.2.1).
7. A construction method of the warm ventilating plenum structure according to any one of claims 1 to 6, characterized in that: comprises the following steps of preparing a mixture of a plurality of raw materials,
the method comprises the following steps of firstly, carrying out structural treatment and leveling on the lower surface of a concrete slab of a grandstand ladder (1);
secondly, a first heat preservation layer (8), a steel wire mesh (9) and a mortar layer (10) are sequentially arranged on the lower surface of the stand ladder (1) from inside to outside;
thirdly, positioning and paying off; determining the outer contour line of the static pressure box structure and the axial dimension of the static pressure box structure, guiding the static pressure box structure on a poured vertical component (2) by using a level gauge, and popping up a horizontal line;
step four, mounting the suspender (5): a through line is pulled before the hanging rods (5) are installed, so that the connection points of the hanging rods (5) on the vertical side surfaces of the grandstand ladder (1) are on a straight line, and each group of hanging rods (5) is correspondingly connected to the vertical side surface of the grandstand ladder (1);
step five, heat preservation treatment of the suspender (5);
sixthly, manufacturing and installing a steel skeleton (4); the steel skeleton (4) is formed by correspondingly welding an inclined section frame (4.1) and a horizontal section frame (4.2), and the inclined section frame (4.1) and the horizontal section frame (4.2) are both rectangular lattice structures; the upper end edge and the lower end edge of the steel skeleton (4) are respectively connected with the vertical component (2) on the corresponding side through a first connecting piece (11), and a group of suspenders (5) are correspondingly welded with the steel skeleton (4);
step seven, acceptance of the steel skeleton (4);
step eight, manufacturing a static pressure box bottom plate (6); the static pressure box bottom plate (6) is formed by splicing a group of static pressure box bottom plate units, the size of each static pressure box bottom plate unit is matched with the size of a sash in the steel framework (4), and the error between the size of each static pressure box bottom plate unit and the design size is not more than 5mm so as to ensure the tightness between the static pressure box bottom plate units during splicing;
step nine, mounting a bottom plate (6) of the static pressure box: comprises the connection of a static pressure box bottom plate (6) and a steel skeleton (4) and the seam processing of the static pressure box bottom plate (6);
tenthly, checking and accepting the bottom plate (6) of the static pressure box;
step eleven, processing the seam: in order to ensure the sealing performance of the static pressure box structure, sealing strips with the width not less than 100mm are laid at the joint of the bottom plate unit of the static pressure box, and the sealing strips are laid along the whole length of the plate joint; laying a sealing strip with the width not less than 100mm at the joint of the static pressure box bottom plate (6) and the vertical member (2), and laying the sealing strip along the whole length of the joint;
step twelve, integrally checking and accepting the static pressure box structure: the overall acceptance of the static pressure box structure comprises firmness acceptance of the static pressure box structure and sealing acceptance of the static pressure box structure;
step thirteen, spraying fireproof paint to the static pressure box structure: and after the static pressure box structure is qualified, spraying fireproof coating on the static pressure box structure, and finishing construction.
8. The construction method of the warm-ventilation static pressure box structure according to claim 7, characterized in that: in the fourth step, the suspender (5) is connected to the vertical side surface of the stand ladder (1) through a second connecting piece (12); the second connecting piece (12) comprises a second connecting plate (12.1) and a second embedded piece (12.2); the second embedded part (12.2) is embedded in the grandstand ladder (1), and the second connecting plate (12.1) is connected to the top of the suspender (5); when the hanger rod (5) is installed, the second connecting plate (12.1) and the second embedded part (12.2) are connected in a welding mode.
9. The construction method of the warm-ventilation static pressure box structure according to claim 7, characterized in that: in the sixth step, the first connecting piece (11) comprises a first connecting plate (11.1) and a first embedded piece (11.2); the first embedded parts (11.2) are embedded in the vertical members (2) on the corresponding side, and the first connecting plates (11.1) are respectively connected to the upper end edge and the lower end edge of the steel skeleton (4) at intervals; when the steel framework (4) is installed, the first connecting plate (11.1) and the first embedded part (11.2) are connected in a welding mode.
10. The construction method of the warm-ventilation static pressure box structure according to claim 7, characterized in that: in the tenth step, the firmness acceptance of the static pressure box structure is specifically as follows: after the static pressure box bottom plate (6) is installed, placing a heavy object on a static pressure box bottom plate unit, and standing for 48 hours; if the hanger rod (5) and the steel skeleton (4) are not deformed and damaged, the structure can bear heavy objects with corresponding mass;
the tightness acceptance check of the static pressure box structure specifically comprises the following steps: irradiating the inner side of the static pressure box bottom plate (6) by using a strong light, wherein no light is transmitted at the joint; then, a high-pressure blower is used for supplying air from the inside of the bottom plate (6) of the static pressure box to the joint, a probe of the handheld anemometer is close to the plate joint, the anemometer displays that the wind speed is zero, and the sealing performance of the static pressure box structure meets the requirement.
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| CN201910952809.7A CN110645696A (en) | 2019-10-09 | 2019-10-09 | Heating and ventilation static pressure box structure and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106760679A (en) * | 2017-02-23 | 2017-05-31 | 北京城建七建设工程有限公司 | Building static pressure cell structure and its construction method |
| CN111877814A (en) * | 2020-07-21 | 2020-11-03 | 上海建工二建集团有限公司 | Construction method for prefabricating bare concrete stand plate |
-
2019
- 2019-10-09 CN CN201910952809.7A patent/CN110645696A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106760679A (en) * | 2017-02-23 | 2017-05-31 | 北京城建七建设工程有限公司 | Building static pressure cell structure and its construction method |
| CN111877814A (en) * | 2020-07-21 | 2020-11-03 | 上海建工二建集团有限公司 | Construction method for prefabricating bare concrete stand plate |
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