CN112064825B - Construction method of basement stair firewall - Google Patents
Construction method of basement stair firewall Download PDFInfo
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- CN112064825B CN112064825B CN202010724179.0A CN202010724179A CN112064825B CN 112064825 B CN112064825 B CN 112064825B CN 202010724179 A CN202010724179 A CN 202010724179A CN 112064825 B CN112064825 B CN 112064825B
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/64—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of concrete
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- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/94—Protection against other undesired influences or dangers against fire
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- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
- E04B2/04—Walls having neither cavities between, nor in, the solid elements
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- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
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- E—FIXED CONSTRUCTIONS
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- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
- E04G13/02—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for columns or like pillars; Special tying or clamping means therefor
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Abstract
The invention discloses a construction method of a basement stair firewall, which comprises the following steps: step one, field measurement; step two, construction preparation; step three, building a firewall: a. erecting a steel structure template; b. pouring a firewall foundation; c. building a firewall; d. performing firewall quality inspection; e. constructing a fireproof wall surface; f. wall surface painting; g. checking and accepting the firewall; step four, maintenance of the firewall: selecting a professional to perform daily protection on the firewall and the firewall constructional column; and fifthly, finishing construction, wherein the structure is reasonable, when the firewall of the basement stair is constructed, the verticality and the flatness of the fireproof wall surface are controlled, the thickness of the plastering layers on two sides is controlled to be 25mm, and each side is plastered by 12.5mm, so that the problem that the plastering layers occupy the clearance of the stair sections is effectively solved, and meanwhile, the central line of the handrail is flush with the outer edge of the firewall, and the occupation of the clear width of the stair is avoided.
Description
Technical Field
The invention relates to a firewall construction technology, in particular to a construction method of a basement stair firewall, and belongs to the technical field of building construction.
Background
The construction design technical term refers to a non-combustible wall body which prevents a fire from spreading to an adjacent area and has a fire resistance limit of not less than 3 hours. The important partition member for dividing fire-proof partitions or preventing fire spreading between buildings can effectively limit the fire in a certain space in the initial stage of the fire and in the process of fire extinguishing, prevent the fire from spreading to the other side at one side of a fire wall, and has an important effect on reducing fire loss. The fire wall, the common brick wall and the floor slab are fixed fire-proof separating components; the openable and closable type comprises a fireproof door, a fireproof window, a fireproof rolling screen, a fireproof water curtain and the like.
The construction method of the heat-insulation fireproof wall surface with the publication number of CN110748022A has the advantages that the sound-insulation board and the heat-insulation board are spliced again, so that the heat-insulation and sound-insulation functions of the wall surface are enhanced, on the other hand, dry powder is mixed between the fireproof boards, so that the fireproof function of the wall surface of a house is enhanced, and the fire spreading speed can be hindered when a fire disaster occurs;
along with the refined and continuous promotion of the design, the spaces of public areas such as stairs and the like are generally compressed to ensure the minimum width, the most common staircase is designed to have two staircase sections with the widths of 1200mm (without a plastering facing) and the width of a stairwell of 100mm respectively, namely the width of the whole staircase is controlled to be 2500mm (without the plastering facing), after the plastering facing and the handrails are added, the pure width of the staircase is just 1100mm, but when one staircase is an elevator front chamber, the design is barrier-free, in order to ensure the pure width of an outdoor passage to be 1200mm, the width size of the staircase section from one floor to the basement must be compressed, so that the requirement of the pure width of 1100mm cannot be met after the handrail is additionally arranged on the plastering facing of the staircase section of the basement, the acceptance is not passed, the project progress is influenced, meanwhile, the pure width of the staircase is not enough, great hidden danger is brought to the fire safety, meanwhile, the acceptance work of the constructed basement is not strict enough, the quality of the basement stair firewall is also greatly influenced, and therefore, a construction method of the basement stair firewall is provided.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a construction method of a basement stair firewall so as to solve the problems in the background art, the structure of the firewall is reasonable, the firewall is constructed on the basement stair firewall, the firewall is made of aerated concrete blocks with the thickness of 100mm, and the building blocks can be purchased easily in the market, so that the problem of difficult material purchase is effectively solved; the perpendicularity and the flatness are controlled when the fireproof wall surface is built, the thickness of plastering layers on two sides is controlled to be 25mm, and the thickness of plastering on each side is controlled to be 12.5mm, so that the problem that the plastering layers occupy a bench clearance is effectively solved; the middle of the aerated concrete block is provided with a U-shaped concrete waist beam, a U-shaped groove is formed in the U-shaped concrete waist beam, the stair handrail is arranged in the U-shaped groove, the center line of the handrail is flush with the outer edge of the wall, and the handrail does not occupy a clearance leading to the stair section of the basement; prevent that hot wall both ends free end sets up the constructional column, and the U-shaped concrete waist rail is connected with the constructional column, and greatly increased prevents hot wall's bulk strength, rigidity and stability.
The technical problem to be solved by the invention is as follows:
(1) when a layer of firewall leading to the stairway of the basement is constructed, materials such as sound insulation boards, heat insulation boards, fireproof boards and the like are avoided, so that the problem of limiting the width of the stairway section of the basement is solved;
(2) how to paint the plaster facing and install the railing in the staircase of the basement, the requirement that the clear width of the stair section reaches 1100mm can still be met, so that the problem that the project progress is influenced because the clear width of the staircase section does not meet 1100mm after the plaster facing and the handrail are additionally installed in the staircase of the basement is effectively avoided, and the problem that the project progress is influenced because the acceptance is not passed is further solved; the problem of fire safety hidden danger caused by insufficient clear width of the ladder section is solved;
(3) how to improve the rigor of the checking and accepting work of the stair firewall of the basement and avoid influencing the construction quality of the stair firewall of the basement;
the purpose of the invention can be realized by the following technical scheme:
a construction method of a basement stair firewall comprises the following steps:
step one, field measurement: measuring and surveying the construction site on site, and accurately measuring the width of a stairwell, the width of a first floor led to the outside, the width of a first floor led to a basement ladder section and the width of a ladder section plate, so as to calculate the thickness of the aerated concrete bricks and the placement height of the U-shaped concrete waist rail;
step two, construction preparation: according to on-site measurement, purchasing aerated concrete bricks required by building a firewall of a basement stair, and preparing steel structure templates and reinforcing steel bar raw materials with corresponding specifications;
step three, building a firewall:
a. erecting a steel structure template: firstly, a steel structure template is polished by a polishing machine, template wax is smeared on two side faces of the steel structure template, the template wax prevents concrete from being stuck on the steel structure template, so that the appearance is influenced after demolding, a firewall foundation is formed by surrounding baffles of the steel structure template, meanwhile, two free ends of the firewall are provided with constructional columns, the constructional columns are supported by the surrounding baffles of the steel structure template, the joint of the steel structure template and the steel structure template is sealed by a high-strength plastic sealing strip to prevent slurry leakage, then the steel structure template is locked, finally, the flatness of the steel structure template is strictly controlled by a photoelectric planometer, the error is less than 2mm, and the requirements of the levelness and the verticality of the installation of the steel structure template are met;
b. pouring the foundation of the firewall: processing reinforcing steel bars required by a firewall, anchoring the reinforcing steel bars into a firewall foundation and a firewall constructional column in a criss-cross manner to form a transverse keel and a vertical keel of the firewall foundation, pouring the firewall foundation and the firewall constructional column after the transverse keel and the vertical keel are qualified through supervision and inspection, strictly controlling the proportion of poured concrete, stirring the concrete through external stirring equipment, and pouring the concrete into a steel structure template through a concrete delivery pump;
c. and (5) building a firewall: after the firewall foundation and the firewall constructional column are completely condensed and hardened, a constructor builds aerated concrete bricks on the firewall foundation, when the aerated concrete bricks are built to reach the placing height of the U-shaped concrete waist beam, the U-shaped concrete waist beam is built on the aerated concrete bricks, the U-shaped concrete waist beam is connected with the constructional column, the overall strength, rigidity and stability of the wall are improved, a U-shaped groove is formed in the U-shaped concrete waist beam, one layer of handrail leading to the basement stair is arranged in the U-shaped groove, the central line of the handrail is flush with the outer side of the wall and does not occupy the clearance of a bench, the handrail is completely installed, the aerated concrete bricks are continuously built to the specified height, and after the built firewall and the firewall constructional column are completely condensed and hardened, the steel structural template is detached;
d. and (4) firewall quality inspection: the built firewall and the firewall constructional column adopt the photoelectric planometer again, the flatness of the firewall and the firewall constructional column is strictly controlled, the error is smaller than 2mm, the requirements of the levelness and the verticality of the installation of the steel structure template are met, meanwhile, the resiliometer is adopted to detect the strength of the firewall, and the next procedure construction is carried out when the strength reaches the bearing strength;
e. constructing a fireproof wall surface: a construction operation platform is erected by using a floor scaffold;
f. wall surface painting: uniformly painting plastering layers on two side surfaces of the firewall, wherein the plastering layers are fireproof paint of the firewall, the plastering layers are ensured to be smooth in the painting process, the phenomena of bubbles and honeycomb pitted surface are prevented, and after the fireproof paint is completely dried in the air;
g. and (4) checking and accepting the firewall: checking and accepting by a checking and accepting device by a professional checking and accepting person, and finishing the building work of the firewall;
step four, finishing construction: after the acceptance is qualified, the constructors and the construction equipment are evacuated from the construction site, and the sanitation of the construction site is cleared up
Step five, maintenance of the firewall: and selecting professionals to perform daily protection on the firewall and the firewall constructional column.
Further, the thickness of aerated concrete brickwork is 100mm, the concrete grade of U-shaped concrete wale is C20, the central line of handrail and prevent hot wall outside looks parallel and level, U-shaped concrete wale is connected with the constructional column, the thickness of plastering on the layer of plastering is 12.5 mm.
Furthermore, the acceptance device comprises a data acquisition module, a positioning module, a task distribution module, a display module, an acceptance analysis module, a database, an acceptance release module, a mobile phone terminal and a server;
the mobile phone terminal is used for verifying personnel to submit personal information for registration and login, and sending the personal information to the database for storage, wherein the personal information comprises a name, an identity card number, a real-name authentication mobile phone number, verification data and enrollment time of the verifying personnel, and the verification data comprises verification times, verification accuracy and verification time; the acceptance issuing module is used for issuing an acceptance request of the basement stair firewall; the task allocation module is used for allocating the basement stair firewall acceptance tasks, and the specific allocation process is as follows:
s1: acquiring the acceptance personnel in the idle state, classifying the acceptance personnel in the idle state as the personnel to be selected, and marking the personnel to be selected as i, wherein i is 1, … … and n;
s2: the method comprises the steps of obtaining total check-in amount Yzi and check-in success amount Yci of a person to be selected, calculating the check-in accuracy rate Yi of the person to be selected to be Yci/Yzi, obtaining the current check-in task amount Yri, check-in efficiency Yxi and the total check-in time Yti of all tasks of the person to be selected, and calculating the average check-in time Ypti of the person to be selected by utilizing a summation and averaging formula;
s3: and (3) calculating to obtain an acceptance recommended value Ytj of the candidate by using a formula, wherein the specific formula is as follows:
s4: acquiring the people to be selected of the first three of the acceptance recommended values, and classifying the people to be selected into preselected people Yj, wherein j is 1, 2 and 3;
s5: acquiring the data of the acceptance personnel and the acceptance recommended value Ytj of the preselected personnel Yj, calculating the job time of the preselected personnel according to the current time and the first registration login time, and marking the job time as Etj;
s6: establishing a rectangular coordinate system by taking the basement stair firewall to be checked as an original point, and calculating the linear distance Disj of the person to be selected from the basement stair firewall by using a distance formula between two points;
s7: obtaining acceptance price Prij and favorable rating Atj of the preselected personnel;
s8: and calculating an acceptance value M by using a formula, wherein the specific calculation formula is as follows:
S9: acquiring the candidate with the maximum acceptance value M, classifying the candidate with the maximum acceptance value as an acceptance person, and increasing the acceptance task amount of the acceptance person once;
the display module is used for displaying acceptance data of the firewall of the staircase of the basement; the database is used for storing data; the data acquisition module is used for acquiring data of the basement stair firewall; the positioning module is used for positioning the geographic position of the firewall of the underground stair and the geographic position of the acceptance personnel; the acceptance analysis module is used for analyzing the data acquired by the data acquisition module, and the specific analysis working process is as follows:
SS 1: the method comprises the steps of obtaining the plastering thickness Mh, the verticality Cz and the flatness Pz of the basement stair firewall, obtaining the width Tk of the basement stair step and obtaining the fire resistance Nh of the U-shaped concrete waist beam by using various instruments;
SS 2: calculating the qualified value of the basement stair firewall by using a formula
Comparing Hg with a set threshold, and if the qualified value Hg exceeds the set threshold, entering the next step SS3, otherwise, directly displaying the unqualified value through a display module;
SS 3: obtaining a design value Fc of compressive strength, calculating a design value Rd of resistance per linear meter, obtaining the height G, the width K and the volume weight R of the aerated concrete brick, calculating a design value S of load per linear meter, and when Rd is more than S, the strength meets the requirement.
Further, the acceptance publishing module is also used for publishing the length, the width and the height of the firewall of the staircase of the basement; the positioning module is also used for sending the position information of the firewall of the staircase of the basement to the mobile phone terminal of the acceptance staff.
Compared with the prior art, the invention has the beneficial effects that:
1. when the firewall of the basement stairs is constructed, the firewall is made of aerated concrete blocks with the thickness of 100mm, and is easy to purchase in the market, so that the problem of difficult material purchase is effectively solved; the perpendicularity and the flatness are controlled when the fireproof wall surface is built, the thickness of plastering layers on two sides is controlled to be 25mm, and the thickness of plastering on each side is controlled to be 12.5mm, so that the problem that the plastering layers occupy a bench clearance is effectively solved; the middle of the aerated concrete block is provided with a U-shaped concrete waist beam, a U-shaped groove is formed in the U-shaped concrete waist beam, the stair handrail is arranged in the U-shaped groove, the center line of the handrail is flush with the outer edge of the wall, and the handrail does not occupy a clearance leading to the stair section of the basement; constructional columns are arranged at the two free ends of the firewall, and the U-shaped concrete waist beam is connected with the constructional columns, so that the overall strength, rigidity and stability of the firewall are greatly improved;
2. the stair building of basement in the invention belongs to the second class of high floors, the fire rating of the stair building is not lower than the second class, the fire limit of evacuation stairs is not lower than 1h, the fire limit of 100mm thick aerated concrete block wall in the invention is 6h, the concrete rating of U-shaped concrete waist rail is C20, the fire limit of U-shaped concrete waist rail is 1h, can fully meet the requirement of fire limit, the invention sets up the handrail in the U-shaped groove of U-shaped concrete waist rail in a concealed manner, make the handrail central line apart from finishing face of opposite wall 1.1m, and the thickness of the plastering layer on one side of the firewall is 12.5mm, the plastering thickness is not greater than 18mm, meet the requirement of evacuation walkway, evacuation stairs and first floor evacuation outer door;
3. the acceptance personnel in the invention submits the personal information through the mobile phone terminal to register and log in, and sends the personal information to the database for storage, when the basement stair firewall is constructed, an acceptance request of the basement stair firewall is issued through an acceptance issuing module, a task allocation module allocates acceptance tasks of the basement stair firewall, firstly, acceptance personnel in an idle state are obtained, classifying the inspection personnel in an idle state as inspection personnel i, obtaining the total inspection amount Yzi and the successful inspection amount Yci of the inspection personnel, calculating the inspection accuracy rate Yi of the inspection personnel to be Yci/Yzi, obtaining the current task amount Yri, the inspection efficiency Yxi and the total inspection time Yti of all tasks of the inspection personnel, calculating the average inspection time Ypti of the inspection personnel by using a summation and averaging formula, and then using the formula.
Calculating to obtain an acceptance recommended value Ytj of the person to be selected, classifying the person to be selected three times before the acceptance recommended value as a preselected person Yj, obtaining acceptance data and an acceptance recommended value Ytj of the preselected person Yj, and calculating to obtain the job entering duration Etj of the preselected person according to the current time and the first registration login time;
then, a rectangular coordinate system is established by taking the basement stair firewall needing to be checked as an original point, the linear distance Disj of the person to be selected from the basement stair firewall is calculated by using a distance formula between two points, the checking price Prij and the goodness Atj of the preselected person are obtained, and the formula is used for calculating the linear distance Disj of the person to be selected from the basement stair firewall, and the checking price Prij and the goodness Atj of the preselected person
Calculating to obtain an acceptance value M, acquiring the candidate with the maximum acceptance value M, classifying the candidate with the maximum acceptance value as an acceptance person, increasing the acceptance task amount of the acceptance person once, sending the position information of the basement stair firewall to a mobile phone terminal of the acceptance person by a positioning module, acquiring the data of the basement stair firewall by a data acquisition module after the acceptance person arrives at a specified acceptance position, analyzing the data acquired by the data acquisition module by an acceptance analysis module, acquiring the plastering thickness Mh, the verticality Cz and the flatness Pz of the basement stair firewall by the acceptance person by various instruments, acquiring the width Tk of the basement stair section, acquiring the fire resistance Nh of the U-shaped concrete waist beam, and acquiring the fire resistance Nh of the U-shaped concrete waist beam by using a formula
Calculating to obtain a qualified value of the basement stair firewall, comparing Hg with a set threshold, obtaining a compressive strength design value Fc of the basement stair firewall again if the qualified value Hg exceeds the set threshold, calculating to obtain a resistance design value Rd of each linear meter, obtaining the height G, the width K and the volume weight R of the aerated concrete bricks, calculating to obtain a load design value S of each linear meter, when the Rd is larger than S, the strength meets the requirement, otherwise, unqualified data of the basement stair firewall directly passes through a display module to carry out unqualified values, and the design improves the checking accuracy of the basement stair firewall through data calculation, so that the checking accuracy of the basement stair firewall is greatly improved, and the checking accuracy of the basement stair firewall is greatly improvedThe rigidness of the checking and accepting work of the stair firewall of the basement is improved, and the construction quality of the stair firewall of the basement is prevented from being influenced.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a flow chart of a construction method of a basement stair firewall according to the present invention;
FIG. 2 is a top view of a basement staircase in the method of constructing a firewall in a basement staircase according to the present invention;
FIG. 3 is a side view of a basement staircase in the method of constructing a firewall in a basement staircase according to the present invention;
FIG. 4 is a cross-sectional view of a U-shaped concrete waist rail in the construction method of the firewall of the basement stairs of the present invention;
FIG. 5 is a system block diagram of a construction method of a basement stair firewall according to the present invention;
in the figure: 1. a U-shaped concrete wale; 2. a basement staircase; 3. a firewall; 4. a handrail; 5. a U-shaped groove.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a method for constructing a firewall of a basement stair comprises the following steps:
step one, field measurement: measuring and surveying the construction site on site, and accurately measuring the width of a stairwell, the width of a first floor led to the outside, the width of a first floor led to a basement ladder section and the width of a ladder section plate, so as to calculate the thickness of the aerated concrete bricks and the placement height of the U-shaped concrete waist rail;
step two, construction preparation: according to on-site measurement, purchasing aerated concrete bricks required by building a firewall of a basement stair, and preparing steel structure templates and reinforcing steel bar raw materials with corresponding specifications;
step three, building a firewall:
a. erecting a steel structure template: firstly, a steel structure template is polished by a polishing machine, template wax is smeared on two side faces of the steel structure template, the template wax prevents concrete from being stuck on the steel structure template, so that the appearance is influenced after demolding, a firewall foundation is formed by surrounding baffles of the steel structure template, meanwhile, two free ends of the firewall are provided with constructional columns, the constructional columns are supported by the surrounding baffles of the steel structure template, the joint of the steel structure template and the steel structure template is sealed by a high-strength plastic sealing strip to prevent slurry leakage, then the steel structure template is locked, finally, the flatness of the steel structure template is strictly controlled by a photoelectric planometer, the error is less than 2mm, and the requirements of the levelness and the verticality of the installation of the steel structure template are met;
b. pouring the foundation of the firewall: processing reinforcing steel bars required by a firewall, anchoring the reinforcing steel bars into a firewall foundation and a firewall constructional column in a criss-cross manner to form a transverse keel and a vertical keel of the firewall foundation, pouring the firewall foundation and the firewall constructional column after the transverse keel and the vertical keel are qualified through supervision and inspection, strictly controlling the proportion of poured concrete, stirring the concrete through external stirring equipment, and pouring the concrete into a steel structure template through a concrete delivery pump;
c. and (5) building a firewall: after the firewall foundation and the firewall constructional column are completely condensed and hardened, a constructor builds aerated concrete bricks on the firewall foundation, when the aerated concrete bricks are built to reach the placing height of the U-shaped concrete waist beam, the U-shaped concrete waist beam is built on the aerated concrete bricks, the U-shaped concrete waist beam is connected with the constructional column, the overall strength, rigidity and stability of the wall are improved, a U-shaped groove is formed in the U-shaped concrete waist beam, one layer of handrail leading to the basement stair is arranged in the U-shaped groove, the central line of the handrail is flush with the outer side of the wall and does not occupy the clearance of a bench, the handrail is completely installed, the aerated concrete bricks are continuously built to the specified height, and after the built firewall and the firewall constructional column are completely condensed and hardened, the steel structural template is detached;
d. and (4) firewall quality inspection: the built firewall and the firewall constructional column adopt the photoelectric planometer again, the flatness of the firewall and the firewall constructional column is strictly controlled, the error is smaller than 2mm, the requirements of the levelness and the verticality of the installation of the steel structure template are met, meanwhile, the resiliometer is adopted to detect the strength of the firewall, and the next procedure construction is carried out when the strength reaches the bearing strength;
e. constructing a fireproof wall surface: a construction operation platform is erected by using a floor scaffold;
f. wall surface painting: uniformly painting plastering layers on two side surfaces of the firewall, wherein the plastering layers are fireproof paint of the firewall, the plastering layers are ensured to be smooth in the painting process, the phenomena of bubbles and honeycomb pitted surface are prevented, and after the fireproof paint is completely dried in the air;
g. and (4) checking and accepting the firewall: checking and accepting by a checking and accepting device by a professional checking and accepting person, and finishing the building work of the firewall;
step four, finishing construction: after the acceptance is qualified, the constructors and the construction equipment are evacuated from the construction site, and the sanitation of the construction site is cleared up
Step five, maintenance of the firewall: and selecting professionals to perform daily protection on the firewall and the firewall constructional column.
Wherein, aerated concrete brickwork's thickness is 100mm, and the thick aerated concrete block wall limit of fire resistance of 100mm is 6h, guarantees to prevent hot wall's fire resistance, the concrete grade of U-shaped concrete waist rail is C20, and the limit of fire resistance of C20's U-shaped concrete waist rail is 1h, can satisfy the limit of fire resistance requirement completely, the central line of handrail and prevent hot wall outside parallel and level mutually avoid the handrail to occupy the bench clearance, U-shaped concrete waist rail and constructional column connection increase and prevent hot wall bulk strength, rigidity and stability, the thickness of plastering on plastering layer is 12.5mm, solves the plastering layer and occupies the bench clearance problem.
The acceptance device comprises a data acquisition module, a positioning module, a task distribution module, a display module, an acceptance analysis module, a database, an acceptance release module, a mobile phone terminal and a server;
the mobile phone terminal is used for verifying personnel to submit personal information for registration and login, and sending the personal information to the database for storage, wherein the personal information comprises a name, an identity card number, a real-name authentication mobile phone number, verification data and enrollment time of the verifying personnel, and the verification data comprises verification times, verification accuracy and verification time; the acceptance issuing module is used for issuing an acceptance request of the basement stair firewall; the task allocation module is used for allocating the basement stair firewall acceptance tasks, and the specific allocation process is as follows:
s1: acquiring the acceptance personnel in the idle state, classifying the acceptance personnel in the idle state as the personnel to be selected, and marking the personnel to be selected as i, wherein i is 1, … … and n;
s2: the method comprises the steps of obtaining total check-in amount Yzi and check-in success amount Yci of a person to be selected, calculating the check-in accuracy rate Yi of the person to be selected to be Yci/Yzi, obtaining the current check-in task amount Yri, check-in efficiency Yxi and the total check-in time Yti of all tasks of the person to be selected, and calculating the average check-in time Ypti of the person to be selected by utilizing a summation and averaging formula;
s3: and (3) calculating to obtain an acceptance recommended value Ytj of the candidate by using a formula, wherein the specific formula is as follows:
s4: acquiring the people to be selected of the first three of the acceptance recommended values, and classifying the people to be selected into preselected people Yj, wherein j is 1, 2 and 3;
s5: acquiring the data of the acceptance personnel and the acceptance recommended value Ytj of the preselected personnel Yj, calculating the job time of the preselected personnel according to the current time and the first registration login time, and marking the job time as Etj;
s6: establishing a rectangular coordinate system by taking the basement stair firewall to be checked as an original point, and calculating the linear distance Disj of the person to be selected from the basement stair firewall by using a distance formula between two points;
s7: obtaining acceptance price Prij and favorable rating Atj of the preselected personnel;
s8: and calculating an acceptance value M by using a formula, wherein the specific calculation formula is as follows:
s9: acquiring the candidate with the maximum acceptance value M, classifying the candidate with the maximum acceptance value as an acceptance person, and increasing the acceptance task amount of the acceptance person once;
the display module is used for displaying acceptance data of the firewall of the staircase of the basement; the database is used for storing data; the data acquisition module is used for acquiring data of the basement stair firewall; the positioning module is used for positioning the geographic position of the firewall of the underground stair and the geographic position of the acceptance personnel; the acceptance analysis module is used for analyzing the data acquired by the data acquisition module, and the specific analysis working process is as follows:
SS 1: the method comprises the steps of obtaining the plastering thickness Mh, the verticality Cz and the flatness Pz of the basement stair firewall, obtaining the width Tk of the basement stair step and obtaining the fire resistance Nh of the U-shaped concrete waist beam by using various instruments;
SS 2: calculating the qualified value of the basement stair firewall by using a formula
Comparing Hg with a set threshold, and if the qualified value Hg exceeds the set threshold, entering the next step SS3, otherwise, directly displaying the unqualified value through a display module;
SS 3: obtaining a design value Fc of compressive strength, calculating a design value Rd of resistance per linear meter, obtaining the height G, the width K and the volume weight R of the aerated concrete brick, calculating a design value S of load per linear meter, and when Rd is more than S, the strength meets the requirement.
Further, the acceptance publishing module is also used for publishing the length, the width and the height of the firewall of the staircase of the basement; the positioning module is also used for sending the position information of the firewall of the staircase of the basement to the mobile phone terminal of the acceptance staff.
A construction method of a basement stair firewall comprises the steps that during operation, constructors firstly measure and map the construction site of a basement stair, accurately measure the width of a stairwell, the width of a first floor leading to the outside of a basement, the width of a first floor leading to a basement and the width of a stair block, further calculate the thickness of a required aerated concrete brick and the placement height of a U-shaped concrete waist rail, then carry out construction preparation according to site measurement, purchase the basement stair firewall to construct the aerated concrete brick with the required thickness, and prepare steel structure templates, steel bars and other raw materials with corresponding specifications;
the construction method comprises the following steps that after preparation of raw materials such as aerated concrete bricks, steel structure templates, reinforcing steel bars and the like is finished, a constructor builds a firewall at the stairs of a basement, firstly, the steel structure templates are polished by an external polishing machine, template wax is uniformly coated on two side faces of the polished steel structure templates, a firewall foundation is formed by enclosing and blocking the steel structure templates, meanwhile, constructional columns are arranged at the two free ends of the firewall, the constructional columns are also arranged and supported by enclosing and blocking the steel structure templates, a high-strength plastic sealing strip is adopted at the joint of the steel structure templates and the steel structure templates for sealing, then, the steel structure templates are locked and fixed to avoid leakage of the steel structure templates, the constructor strictly controls the flatness and the verticality of the steel structure templates by using a photoelectric planometer, the error is less than 2mm, the requirements of the levelness and the verticality of the installation of the steel structure templates are met, and then the reinforcing steel bars required by the firewall are processed, the reinforcing steel bars are anchored into the firewall foundation and the firewall constructional columns in a criss-cross mode, the longitudinal and transverse reinforcing steel bars form the transverse keels and the vertical keels of the firewall foundation, the structural strength of the firewall foundation is greatly improved, and after the foundation is qualified through supervision and inspection, constructors strictly control the proportion of poured concrete;
when pouring, concrete is stirred by external stirring equipment, then the concrete is poured into a steel structure mold enclosure of a firewall foundation and a firewall constructional column through a concrete delivery pump, after the firewall foundation and the firewall constructional column are completely condensed and hardened, constructors build aerated concrete bricks on the firewall foundation, when the aerated concrete bricks are built to reach the placement height of a U-shaped concrete waist rail, the U-shaped concrete waist rail is built on the aerated concrete bricks, the U-shaped concrete waist rail is connected with the constructional column to increase the overall strength, rigidity and stability of the firewall, a U-shaped groove is formed in the U-shaped concrete waist rail, a layer of handrail leading to a basement stair is arranged in the U-shaped groove, the central line of the handrail is level with the outer edge of the firewall to avoid the handrail occupying a step clearance, and the concrete grade of the U-shaped concrete waist rail is C20, c20, the fire endurance of the U-shaped concrete waist rail is 1h, the requirement of the fire endurance can be completely met, after the installation of the handrail is finished, the aerated concrete bricks are continuously built to a specified height, after the built firewall and the built firewall constructional column are completely condensed and hardened, the steel structure template is disassembled, the built firewall and the built firewall constructional column adopt the photoelectric planometer again, the flatness of the firewall and the firewall constructional column is strictly controlled, meanwhile, the resiliometer is adopted to detect the strength of the firewall, the next procedure construction is carried out when the strength reaches the bearing strength, a floor type scaffold is utilized, a construction operation platform is erected, two side surfaces of the firewall are uniformly brushed with plastering layers, the plastering thickness of the plastering layers is 12.5mm, the problem that the plastering layers occupy the clearance of the ladder sections is effectively solved, the plastering layers are fireproof paint of the firewall, and the fireproof paint is completely dried;
when in acceptance, the acceptance personnel of the selection specialty adopts an acceptance device to accept, the acceptance personnel submits personal information through a mobile phone terminal to register and log in, and sends the personal information to a database for storage, when the basement stair firewall is constructed, an acceptance request of the basement stair firewall is issued through an acceptance issuing module, a task allocation module allocates the acceptance task of the basement stair firewall, firstly, the acceptance personnel in an idle state are obtained, the acceptance personnel in the idle state are classified into a candidate i, the total acceptance amount Yzi and the total acceptance success amount Yci of the candidate are obtained, the acceptance accuracy rate Yi of the candidate is Yci/Yzi, the current acceptance task amount Yri, the acceptance efficiency Yxi and the total acceptance time length Yti of all tasks of the candidate are obtained, the average acceptance time length Ypti of the candidate is obtained by utilizing a summation and averaging formula, and then reuse the formula
Calculating to obtain an acceptance recommended value Ytj of the person to be selected, classifying the person to be selected three times before the acceptance recommended value as a preselected person Yj, obtaining acceptance data and an acceptance recommended value Ytj of the preselected person Yj, and calculating to obtain the job entering duration Etj of the preselected person according to the current time and the first registration login time;
then, a rectangular coordinate system is established by taking the basement stair firewall needing to be checked as an original point, the linear distance Disj of the person to be selected from the basement stair firewall is calculated by using a distance formula between two points, the checking price Prij and the goodness Atj of the preselected person are obtained, and the formula is used for calculating the linear distance Disj of the person to be selected from the basement stair firewall, and the checking price Prij and the goodness Atj of the preselected person
Calculating to obtain an acceptance value M, acquiring the candidate with the maximum acceptance value M, classifying the candidate with the maximum acceptance value as an acceptance person, increasing the acceptance task amount of the acceptance person once, sending the position information of the basement stair firewall to a mobile phone terminal of the acceptance person by a positioning module, acquiring the data of the basement stair firewall by a data acquisition module after the acceptance person arrives at a specified acceptance position, analyzing the data acquired by the data acquisition module by an acceptance analysis module, acquiring the plastering thickness Mh, the verticality Cz and the flatness Pz of the basement stair firewall by the acceptance person by various instruments, acquiring the width Tk of the basement stair section, acquiring the fire resistance Nh of the U-shaped concrete waist beam, and acquiring the fire resistance Nh of the U-shaped concrete waist beam by using a formula
Calculating to obtain a qualified value of the basement stair firewall, comparing Hg with a set threshold, obtaining a designed compressive strength value Fc of the basement stair firewall again if the qualified value Hg exceeds the set threshold, calculating to obtain a designed resistance value Rd per linear meter, obtaining the height G, the width K and the volume weight R of the aerated concrete bricks, calculating to obtain a designed load value S per linear meter, wherein when Rd is larger than S, the strength meets the requirement, otherwise, unqualified data of the basement stair firewall directly passes through a display module to perform unqualified value, and the unqualified data is directly passed through the display module to perform unqualified valueThe design improves the accuracy of acceptance of the stair firewall of the basement through data calculation, greatly improves the rigor of the acceptance work of the stair firewall of the basement and avoids influencing the construction quality of the stair firewall of the basement;
after the acceptance is qualified, the constructors and the construction equipment are evacuated from the construction site, the sanitation of the construction site is cleared up, and professionals are selected to carry out daily protection on the firewall and the firewall constructional column, so that the firewall is prevented from being maliciously damaged.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (3)
1. A construction method of a basement stair firewall is characterized by comprising the following steps:
step one, field measurement: measuring and surveying the construction site on site, and accurately measuring the width of a stairwell, the width of a first floor led to the outside, the width of a first floor led to a basement ladder section and the width of a ladder section plate, so as to calculate the thickness of the aerated concrete bricks and the placement height of the U-shaped concrete waist rail;
step two, construction preparation: according to on-site measurement, purchasing aerated concrete bricks required by building a firewall of a basement stair, and preparing steel structure templates and reinforcing steel bar raw materials with corresponding specifications;
step three, building a firewall:
a. erecting a steel structure template: firstly, polishing a steel structure template by a polishing machine, smearing template wax on two side faces of the steel structure template, forming a firewall foundation by a steel structure template enclosure, arranging constructional columns at two free ends of the firewall, supporting the constructional columns by the steel structure template enclosure, sealing the joint of the steel structure template and the steel structure template by adopting a high-strength plastic sealing strip, locking the steel structure template, and finally strictly controlling the flatness of the steel structure template by adopting a photoelectric planometer;
b. pouring the foundation of the firewall: processing reinforcing steel bars required by a firewall, anchoring the reinforcing steel bars into a firewall foundation and a firewall constructional column in a criss-cross manner to form a transverse keel and a vertical keel of the firewall foundation, pouring the firewall foundation and the firewall constructional column after the transverse keel and the vertical keel are qualified through supervision and inspection, strictly controlling the proportion of poured concrete, stirring the concrete through external stirring equipment, and pouring the concrete into a steel structure template through a concrete delivery pump;
c. and (5) building a firewall: after the firewall foundation and the firewall constructional column are completely condensed and hardened, a constructor builds aerated concrete bricks on the firewall foundation, when the aerated concrete bricks are built to reach the placing height of the U-shaped concrete waist beam, the U-shaped concrete waist beam is built on the aerated concrete bricks, the U-shaped concrete waist beam is connected with the constructional column, a U-shaped groove is formed in the U-shaped concrete waist beam, a layer of handrail leading to the basement stair is installed in the U-shaped groove, after the handrail is installed, the aerated concrete bricks are continuously built to the specified height, and after the built firewall and the firewall constructional column are completely condensed and hardened, the steel structure template is detached;
d. and (4) firewall quality inspection: the built firewall and the firewall constructional column strictly control the flatness of the firewall and the firewall constructional column by adopting a photoelectric planometer, and meanwhile, a resiliometer is adopted to detect the strength of the firewall, and the next procedure is carried out when the strength reaches the bearing strength;
e. constructing a fireproof wall surface: a construction operation platform is erected by using a floor scaffold;
f. wall surface painting: uniformly brushing plastering layers on two side surfaces of the firewall, wherein the plastering layers are the fireproof paint of the firewall and are completely dried in the air;
g. and (4) checking and accepting the firewall: checking and accepting by a checking and accepting device by a professional checking and accepting person, and finishing the building work of the firewall;
the acceptance device comprises a data acquisition module, a positioning module, a task distribution module, a display module, an acceptance analysis module, a database, an acceptance release module, a mobile phone terminal and a server;
the mobile phone terminal is used for verifying personnel to submit personal information for registration and login, and sending the personal information to the database for storage, wherein the personal information comprises a name, an identity card number, a real-name authentication mobile phone number, verification data and enrollment time of the verifying personnel, and the verification data comprises verification times, verification accuracy and verification time; the acceptance issuing module is used for issuing an acceptance request of the basement stair firewall; the task allocation module is used for allocating the basement stair firewall acceptance tasks, and the specific allocation process is as follows:
s1: acquiring the acceptance personnel in the idle state, classifying the acceptance personnel in the idle state as the personnel to be selected, and marking as i, i =1, … … and n;
s2: the method comprises the steps of obtaining total check-out amount Yzi and check-out success amount Yci of a person to be selected, calculating check-out accuracy rate Yi = Yci/Yzi of the person to be selected, obtaining current check-out task amount Yri, check-out efficiency Yxi and total check-out time Yti of all tasks of the person to be selected, and calculating average check-out time Ypti of the person to be selected by utilizing a summation-averaging formula;
s3: and (3) calculating to obtain an acceptance recommended value Ytj of the candidate by using a formula, wherein the specific formula is as follows:
Ytj=
wherein a1, a2 and a3 are preset proportionality coefficients, a1+ a2+ a3=1, β is a preset fixed value, and β = 0.001350512;
s4: acquiring people to be selected of the first three of the acceptance recommended values, and classifying the people to be selected into preselected people Yj, wherein j =1, 2 and 3;
s5: acquiring the data of the acceptance personnel and the acceptance recommended value Ytj of the preselected personnel Yj, calculating the job time of the preselected personnel according to the current time and the first registration login time, and marking the job time as Etj;
s6: establishing a rectangular coordinate system by taking the basement stair firewall to be checked as an original point, and calculating the linear distance Disj of the person to be selected from the basement stair firewall by using a distance formula between two points;
s7: obtaining acceptance price Prij and favorable rating Atj of the preselected personnel;
s8: and calculating an acceptance value M by using a formula, wherein the specific calculation formula is as follows:
M=
wherein b1, b2 and b3 are preset proportionality coefficients, and b1+ b2+ b3= 1;
s9: acquiring the candidate with the maximum acceptance value M, classifying the candidate with the maximum acceptance value as an acceptance person, and increasing the acceptance task amount of the acceptance person once;
the display module is used for displaying acceptance data of the firewall of the staircase of the basement; the database is used for storing data; the data acquisition module is used for acquiring data of the basement stair firewall; the positioning module is used for positioning the geographic position of the firewall of the underground stair and the geographic position of the acceptance personnel; the acceptance analysis module is used for analyzing the data acquired by the data acquisition module, and the specific analysis working process is as follows:
SS 1: the method comprises the steps of obtaining the plastering thickness Mh, the verticality Cz and the flatness Pz of the basement stair firewall, obtaining the width Tk of the basement stair step and obtaining the fire resistance Nh of the U-shaped concrete waist beam by using various instruments;
SS 2: calculating the qualified value Hg =of the firewall of the basement stair by using a formula
Comparing Hg with a set threshold, and if the qualified value Hg exceeds the set threshold, entering the next step SS3, otherwise, directly displaying the unqualified value through a display module;
SS 3: obtaining a design value Fc of compressive strength, calculating a design value Rd of resistance per linear meter, obtaining the height G, the width K and the volume weight R of the aerated concrete brick, calculating a design value S of load per linear meter, and when Rd is more than S, the strength meets the requirement;
step four, finishing construction: after the acceptance is qualified, the constructors and the construction equipment are evacuated from the construction site, and the sanitation of the construction site is cleared up
Step five, maintenance of the firewall: and selecting professionals to perform daily protection on the firewall and the firewall constructional column.
2. The basement stair firewall construction method according to claim 1, wherein the thickness of the aerated concrete brickwork is 100mm, the concrete grade of the U-shaped concrete wale is C20, the center line of the handrail is flush with the outer edge of the firewall, and the plastering thickness of the plastering layer is 12.5 mm.
3. The basement stair firewall construction method according to claim 1, wherein the acceptance issuing module is further used for issuing the length, width and height of the basement stair firewall; the positioning module is also used for sending the position information of the firewall of the staircase of the basement to the mobile phone terminal of the acceptance staff.
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