Construction method for assembling spray-building type farmer self-built house

Abstract

The invention discloses a construction method of an assembled spray-building type farmer self-built house, and relates to the technical field of rural residence construction, comprising the following steps: S1, producing and packaging a workpiece; s2, field workpiece searching; s3, the layered assembly type steel structure is installed; s4, light steel keels are arranged; s5, the gypsum spraying type composite roof is constructed; s6, water and electricity pipe groove pre-burying; s7, floor slab pouring; s8, constructing a gypsum spraying type wall body; and S9, door and window installation. According to the construction method for the assembled spray-building type farmer self-built house, on one hand, the industrial byproduct gypsum can be efficiently consumed, resource utilization of industrial solid waste is achieved, and the environmental pressure caused by stockpiling of the industrial byproduct gypsum is relieved; and on the other hand, the gypsum mortar is applied to roof and wall construction through a spraying process, the living comfort is improved, compared with a traditional wall material, the gypsum mortar is higher in construction adaptability and can meet the construction requirements of different parts, meanwhile, the material cost can be controlled easily, and the dual requirements of farmer self-building houses for economical efficiency and practicability are met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rural house construction, in particular to a construction method of an assembled and sprayed rural self-built house. BACKGROUND

[0002] With the development of new technologies in the construction market, as an efficient, fast and reliable building method, the assembled steel structure building has the advantages of mature technology, fast construction speed, good seismic performance and suitability for factory production. On the basis of ensuring the orderly management of site construction, it improves the construction efficiency, shortens the construction period and plays a very important role in the control of construction quality.

[0003] In the actual installation process of the existing assembled steel structure farm house, the concrete sandwich wallboard and light steel keel composite board matched with the assembled steel structure have the problems of heavy self-weight leading to increased load of the steel structure, and easy cracking and water seepage due to many material splicing gaps. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a construction method of an assembled and sprayed rural self-built house, which solves the problems raised in the background art.

[0005] To achieve the above purpose, the present application is realized by the following technical scheme: a construction method of an assembled and sprayed rural self-built house, comprising the following steps:

[0006] S1, workpiece production and packaging:

[0007] After the design personnel on-site exploration, the construction drawings are drawn, and various workpieces are produced based on the construction drawings. The workpieces are classified and packaged based on the installation area of the workpieces. When packaging, the flat signal lamp chip is bound or adhered to the outside of the packaging box;

[0008] S2, on-site workpiece searching:

[0009] When the workpieces are transported to the site, they are classified and placed according to the information table on the surface of the packaging. The installation personnel input the installation area or the workpiece name on the mobile phone app. At this time, the corresponding signal lamp chip is lit and emits a buzzing prompt sound;

[0010] S3, layered assembled steel structure installation;

[0011] S4, light steel keel layout;

[0012] S5, gypsum sprayed composite roof construction:

[0013] Galvanized steel mesh is laid along the bottom side of the light steel roof truss, and then polystyrene board (molded or extruded) is laid on the surface of the galvanized steel mesh. The thickness of the polystyrene board is flush with the top side of the light steel roof truss, and the joints of the board are filled with polyurethane foam, with a surface flatness deviation of ≤3mm. Then, 18mm thick OSB board and 12mm thick fiber cement board are laid on the polystyrene board in sequence.

[0014] Then, two coats of polymer cement-based waterproofing coating are applied to the fiber cement board, with the second coat being applied after the first coat has dried for ≥4h. After the waterproofing layer is completed, a 24h water storage test is performed, and if there is no leakage, it is considered to be qualified. Color asphalt shingles are fixed using self-tapping screws, with a shingle joint overlap of ≥100mm. SBS waterproofing membrane is added at the roof ridge, and the membrane is bonded to the shingles using sealant.

[0015] Finally, two coats of gypsum mortar are sprayed on the galvanized steel mesh (to prevent rusting and improve fire resistance). The first coat has a thickness of 15-20mm, and the second coat is sprayed after 24h of curing. After spraying, the surface is leveled using 120 mesh sandpaper, with a surface flatness deviation of ≤3mm.

[0016] S6, water and electricity pipe trench pre-burying;

[0017] S7, floor pouring;

[0018] S8, gypsum spraying type wall construction:

[0019] Outer wall: after installing polystyrene board (molded or extruded) in the middle of the light steel truss, galvanized steel mesh is laid on the outer side of the outer wall, and glass fiber mesh is laid on the inner side of the outer wall.

[0020] Inner partition wall: glass fiber mesh is laid on both sides of the light steel truss.

[0021] Spraying: two coats of gypsum mortar are sprayed on each side, with a thickness of 40-60mm. The first coat is gridded and reinforced, and the second coat is sprayed and leveled.

[0022] Spray gun pressure: 0.4-0.6MPa. Spray gun mouth to wall distance: 300-500mm. Moving speed: 1-2m / min. Curing time after each spraying: ≥24h. Final surface flatness deviation: ≤4mm.

[0023] Further, in step S1, the signal lamp chip stores the basic information of the workpiece in the packaging box, including the workpiece name and installation area, and the signal lamp chip is designed for detachable recycling.

[0024] Further, in steps S1 to S2, the signal lamp chip is used to position the required workpiece location, which is applicable to various building workpieces, including but not limited to various types of steel structural parts and fastening bolts.

[0025] Further, in step S3, the layered assembly type steel structure is installed.

[0026] After confirming the installation area and its corresponding workpiece, the steel structure column is erected to the base embedded steel plate by manpower, fixed by temporary steel support, and corrected for verticality by level gauge. After positioning the axis by total station, the column is fastened by embedded bolts;

[0027] The cross beam is lifted to the column bracket by manpower, connected by high-strength bolts after adjusting the levelness of the cross beam. After the installation of the cross beam, the overall flatness of the steel structure is detected by laser level gauge;

[0028] The roof light steel keel truss with a span of ≤6m is connected to the top column by bolts, and the truss spacing is ≤1.2m, and angle steel diagonal bracing is installed as a roof support component;

[0029] The steel structure column is installed in layers with a height of 3.0-3.3m per layer. The upper column is connected to the lower column through a flange plate, and the connection is filled with fireproof sealant. After the installation of the roof light steel keel truss, the diagonal bracing is locked with the truss and column by bolts;

[0030] S4, light steel keel layout:

[0031] The outer wall keel is fixed along the steel structure column and connected by self-tapping screws. The number of screws at each connection point is ≥2, the perpendicularity deviation of the keel is ≤3mm / m, and the levelness deviation is ≤2mm / m. The inner partition wall keel is fixed at an interval of ≤1.0m. The top of the keel is fastened with the roof truss, and the bottom is fastened with the floor embedded part by self-tapping screws. A 50-80mm wide hollow cavity is reserved;

[0032] The door and window hole periphery uses double-spliced C-shaped steel as reinforcing keel. The length of the reinforcing keel exceeds the hole by 200mm up and down, and is locked with the main keel.

[0033] Further, in step S5, when laying the galvanized steel mesh, the mesh overlap width is ≥50mm, fixed by self-tapping screws with a screw spacing of ≤200mm. The OSB board and fiber cement board are staggered and arranged, and both are fixed by self-tapping screws;

[0034] The total thickness of the gypsum mortar is 40-60mm.

[0035] Further, in step S6, water and electricity pipe trench pre-burying:

[0036] Before pouring the floor concrete, PVC water supply pipes and drainage pipes are pre-buried according to the design position, and the PVC water supply pipes and drainage pipes are fixed by binding with iron wire on the light steel keel;

[0037] S7, floor pouring:

[0038] Laying 0.8mm thick, 35mm high corrugated steel plate, the steel plate and steel structure beam are fixed by self-tapping screw; laying fiber cement board in the groove of the corrugated steel plate and fixing it by self-tapping screw, then laying steel mesh on the fiber cement board, and pouring 100mm thick C30 fine stone concrete on the fiber cement board, using plug-in vibrating rod to vibrate and compact, and using trowel to finish the surface;

[0039] After seven days, the light steel keel direction of the outer wall and the inner partition wall is supported, wherein the inner partition wall support height is 200mm, the width is 180mm, the outer wall support height is 300mm, and the width is 180mm, and C20 fine stone concrete is poured in the formwork as a moisture-proof layer.

[0040] Further, in steps S5 and S8, the gypsum mortar contains 90-95% of industrial by-product gypsum, 3-8% of vitrified microbeads, 2-5% of quartz sand or heavy calcium, and 0.3-0.9% of additive.

[0041] Further, the construction method of the spray-built farmer self-built house further comprises the following steps:

[0042] S9, door and window installation:

[0043] The door and window frame is embedded in the hole, the gap between the frame and the hole is filled with polyurethane foam glue, and the excess foam glue is cut off; the outside is coated with silicone weather-resistant glue with a width of ≥8mm, and the inside is sealed with gypsum mortar; and then the door and window leaf is installed;

[0044] S10, veneer installation:

[0045] The outer wall adopts metal carved plate (or other prefabricated plate) material with good weather resistance and water resistance, the inner partition wall adopts bamboo-wood fiber plate (or other prefabricated plate) material, the indoor suspended ceiling needs to be installed light steel keel suspended ceiling, and 9mm thick calcium silicate plate or gypsum board is laid; the prefabricated plate is fixed on the spray-built wall plate by structural glue and self-tapping screw;

[0046] The wall surface with waterproof requirement needs to be first coated with 3-5mm thick polymer waterproof anti-crack mortar and fully coated with glass fiber mesh, and then the special ceramic tile adhesive is used to paste the ceramic tile after drying.

[0047] The present application provides a construction method of spray-built farmer self-built house, which has the following beneficial effects:

[0048] 1. The construction method of the assembled spray-built farmer self-built house can efficiently absorb industrial by-product gypsum, realizes resource utilization of industrial solid waste, relieves environmental pressure caused by industrial by-product gypsum storage, meets the policy guidance of green building and industrial green development, gypsum mortar is applied to roof and wall construction through spray construction process, can form stable combination with light steel keel, steel mesh and other structures, helps to improve the comprehensive performance of the building, improves the living comfort, and compared with traditional wall materials, it has stronger construction adaptability, can adapt to the construction needs of different parts, at the same time, it is helpful to control the material cost, and meets the dual needs of economy and practicability of farmer self-built house.

[0049] 2. The construction method of the assembled spray-built farmer self-built house, when the workpieces are classified and packaged based on their functions and areas based on design drawings in the factory, a detachable signal light chip is arranged on the outer wall of the packaging box, after the workpieces arrive at the site, the installer does not need to check the workpiece packaging one by one, only needs to input the demand through the APP, the signal light on the corresponding workpiece packaging is triggered to light up and the buzzer is prompted, the target workpiece is quickly located, the time consumption of on-site searching is significantly reduced, and the construction organization efficiency is improved; at the same time, the signal light chip is designed in a detachable and recyclable mode, which avoids resource waste caused by one-time use, ensures construction convenience, and considers economy and environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0050] Fig. 1 S1 to S5 flow chart of the construction method of the assembled spray-built farmer self-built house of the present application;

[0051] Fig. 2 S5 to S10 flow chart of the construction method of the assembled spray-built farmer self-built house of the present application. DETAILED DESCRIPTION

[0052] The embodiments of the present application will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0053] As Figs. 1-2 shown, the present application provides a technical scheme: a construction method of an assembled spray-built farmer self-built house, comprising the following steps:

[0054] S1, workpiece production packaging:

[0055] The design personnel draw construction drawings after on-site exploration, produce various workpieces based on the construction drawings, classify and package the workpieces based on the installation area of the workpieces, and bind or bond flat signal light chips on the outside of the packaging box when packaging;

[0056] The signal lamp chip stores the basic information of the workpiece in the packaging box, including the workpiece name and installation area, and the signal lamp chip is designed to be detachable and recyclable;

[0057] S2, on-site workpiece searching:

[0058] When the workpiece is transported to the site, the workpiece is classified and placed according to the information table on the packaging surface, and the installation personnel input the installation area or the workpiece name on the mobile phone app, at this time, the corresponding signal lamp chip is lit and emits a buzzing prompt sound;

[0059] The signal lamp chip is used to position the required workpiece position, which is suitable for various building workpieces, including but not limited to various types of steel structure parts and fastening bolts;

[0060] Based on the above description, the application classifies and packages each workpiece based on its function and case area based on design drawings in the factory, sets a detachable signal lamp chip on the outer wall of the packaging box, and after the workpiece reaches the site, the installation personnel do not need to check the workpiece package one by one, but only need to input the demand through the APP to trigger the corresponding signal lamp on the workpiece package to light up and buzz, quickly locate the target workpiece, significantly reduce the time-consuming of on-site searching, and improve the efficiency of construction organization; At the same time, the signal lamp chip is designed to be detachable and recyclable, which avoids the waste of resources caused by one-time use, ensures the convenience of construction, and also considers economy and environmental protection;

[0061] S3, installation of layered assembly type steel structure:

[0062] After confirming the installation area and the corresponding workpiece, the steel structure column is erected to the base embedded steel plate by manpower, fixed by temporary steel support, corrected by level, and fastened by embedded bolt after positioning the axis by total station;

[0063] The cross beam is hoisted to the column bracket, connected by high-strength bolt after adjusting the levelness of the cross beam, and the overall flatness of the steel structure is detected by laser level after the cross beam is installed;

[0064] The roof light steel keel truss with a span of ≤6m is connected with the top column by bolt, the truss spacing is ≤1.2m, and the angle steel diagonal brace is installed as a roof support component;

[0065] The steel structure column is installed in layers according to 3.0-3.3m per layer, the upper column is connected with the lower column through flange plate, the connection is filled with fireproof sealant, and the diagonal brace is locked with the truss and column by bolt after the roof light steel keel truss is installed;

[0066] S4, light steel keel layout:

[0067] Fix the outer wall keel along the steel structure column, connect with self-tapping screws, the number of screws at each connection point ≥ 2, the verticality deviation of the keel ≤ 3 mm / m, the horizontality deviation ≤ 2 mm / m; Fix the inner partition wall keel at an interval of ≤ 1.0 m, fasten the top of the keel with the roof truss and the bottom with the floor embedded part with self-tapping screws, and reserve a 50-80 mm wide hollow cavity;

[0068] Use double-spliced C-shaped steel as the reinforcing keel around the door and window openings, and lock the reinforcing keel with the main keel, with the length of the reinforcing keel exceeding the opening by 200 mm up and down;

[0069] S5, Gypsum spray construction of composite roof:

[0070] Lay galvanized steel mesh along the bottom side of the light steel keel, then lay polystyrene board on the surface, with the thickness of the polystyrene board being flush with the top side of the light steel keel, and the surface flatness deviation being ≤ 3 mm; then lay 18 mm thick OSB board and 12 mm thick fiber cement board on the polystyrene board in turn;

[0071] Then apply polymer cement-based waterproof coating on the fiber cement board for 2 times, with the second time being applied after the first time has dried for ≥ 4 h; after the completion of the waterproof layer, conduct a 24 h water storage test, and it is qualified if there is no leakage; fix the colored asphalt shingles with self-tapping screws, with the shingle joint overlap being ≥ 100 mm; add SBS waterproof roll at the ridge, and bond the roll with the shingles using sealant;

[0072] Finally, spray gypsum mortar on the galvanized steel mesh in 2 passes, with the first pass being 15-20 mm thick, and the second pass being sprayed after 24 h of curing; after spraying, use 120 mesh sandpaper to level, with the surface flatness deviation being ≤ 3 mm;

[0073] When laying the galvanized steel mesh, the mesh overlap width is ≥ 50 mm, and it is fixed with self-tapping screws at a spacing of ≤ 200 mm; the OSB board and fiber cement board are arranged in a staggered joint manner, and both are fixed with self-tapping screws; the total thickness of the gypsum mortar is 40-60 mm;

[0074] S6, Pre-burying of water and electricity pipe channel:

[0075] Before pouring the floor concrete, pre-bury PVC water supply pipes and drainage pipes according to the design position, and fix the PVC water supply pipes and drainage pipes with wire ties on the light steel keel;

[0076] S7, Floor pouring:

[0077] Lay 0.8mm thick, 35mm high profiled steel plate, the steel plate and steel structure beam with self-tapping screw fixed; Lay fiber cement board in the groove of the profiled steel plate and fix it with self-tapping screw, then lay steel mesh on the fiber cement board, and then pour 100mm thick C30 fine stone concrete on the fiber cement board, and use the inserted vibrating rod to vibrate and compact, and use trowel to finish the surface;

[0078] After seven days, the light steel keel direction of the outer wall and the inner partition wall is supported, wherein the inner partition wall support height is 200mm, the width is 180mm, the outer wall support height is 300mm, the width is 180mm, and C20 fine stone concrete is poured in the formwork as a moisture-proof layer;

[0079] S8, gypsum spray construction wall:

[0080] Outer wall: after installing polystyrene board in the middle of the light steel keel, galvanized steel plate net is laid on the outer side of the outer wall, and glass fiber mesh cloth is laid on the inner side of the outer wall;

[0081] Inner partition wall: glass fiber mesh cloth is laid on both sides of the light steel keel;

[0082] Spraying: each side is sprayed with gypsum mortar for 2 times, the thickness is controlled to be 40-60mm, the first time is to punch and reinforce, and the second time is to spray the wall and hang the trowel;

[0083] The spray gun pressure is 0.4-0.6MPa, the distance between the spray gun mouth and the wall surface is 300-500mm, and the moving speed is 1-2m / min; each time after spraying, the maintenance is ≥24h, and the final surface flatness deviation is ≤4mm;

[0084] The gypsum mortar contains industrial by-product gypsum 90-95%, vitrified microbeads 3-8%, quartz sand or heavy calcium 2-5%, and additive 0.3-0.9% by percentage, the above materials are mixed and stirred to prepare the gypsum mortar, and the industrial by-product gypsum is phosphogypsum, and because of the use of gypsum mortar spraying without gap, the problems of material overload and material splicing cracking and water seepage in the traditional scheme can be effectively solved;

[0085] S9, door and window installation:

[0086] The door and window frame is embedded in the hole, the gap between the frame and the hole is filled with polyurethane foam glue, and the excess foam glue is cut off; the outer side is punched with silicone weather-resistant glue with a width of ≥8mm, and the inner side is sealed with gypsum mortar; then the door and window leaf is installed;

[0087] S10, installation of decorative panel:

[0088] The outer wall adopts metal carved plate material with good weather resistance and water resistance, the inner partition wall adopts bamboo and wood fiber board material, the indoor suspended ceiling needs to be installed with light steel keel suspended ceiling, and 9mm thick calcium silicate board or gypsum board is laid; the prefabricated board is fixed on the sprayed wall board with structural glue and self-tapping screw.

[0089] The wall surface with waterproof requirement needs to be firstly coated with 3-5mm thick polymer waterproof anti-cracking mortar and fully coated with glass fiber mesh, and then the tiles are pasted after drying by using special tile adhesive;

[0090] Based on the above description, the gypsum mortar used in the present application can on the one hand efficiently consume industrial by-product gypsum, realize the resource utilization of industrial solid waste, relieve the environmental pressure caused by the storage of industrial by-product gypsum, and meet the policy guidance of green building and industrial green development; on the other hand, the gypsum mortar is applied to roof and wall construction through the spraying construction process, can form stable combination with light steel keel, steel mesh and other structures, help to improve the comprehensive performance of buildings, improve the living comfort, and compared with traditional wall materials, has stronger construction adaptability, can adapt to the construction requirements of different parts, at the same time, helps to control the material cost, meets the dual demands of economy and practicability of self-built houses of farmers.

[0091] The embodiments of the present application are given for the purpose of illustration and description, and are not exhaustive or limit the present application to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the present application and its practical application, and to enable others skilled in the art to understand the present application in order to design various embodiments with various modifications for specific use.

Claims

1. A construction method for assembling a spray-built farmer self-built house, characterized in that: It comprises the following steps: S1, workpiece production packaging: After the designer explores the site, he draws construction drawings, and based on the construction drawings, the factory produces various workpieces, classifies and packages them based on the installation area of the workpieces, and binds or adheres flat signal light chips to the outside of the packaging box during packaging; S2, on-site workpiece search: When the workpieces are transported to the site, they are classified and placed according to the information on the packaging surface, and the installation personnel input the installation area or workpiece name on the mobile phone app, at which time the corresponding signal light chip lights up and emits a buzzing prompt sound; S3, layered assembly type steel structure installation; S4, light steel keel layout; S5, gypsum spray type composite roof construction: Galvanized steel mesh is laid along the bottom side of the light steel keel of the roof, and polystyrene board is laid on the surface, with the thickness of the polystyrene board being flush with the top side of the light steel keel. The joint between the boards is filled with polyurethane foam, and the surface flatness deviation is ≤3mm. Then 18mm thick OSB board and 12mm thick fiber cement board are laid in turn on the polystyrene board; Then apply 2 coats of polymer cement-based waterproof coating on the fiber cement board, with the second coat being applied after the first coat has dried for ≥4h; after the waterproof layer is completed, a 24h water storage test is performed, and it is qualified if there is no leakage; colored asphalt shingles are fixed with self-tapping screws, with the shingle joint lap being ≥100mm; SBS waterproofing membrane is added at the ridge, and the membrane is bonded to the shingles with sealant; Finally, spray gypsum mortar on the galvanized steel mesh in 2 passes, with the first pass being 15-20mm thick, and the second pass being sprayed after 24h of curing. After spraying, use 120 mesh sandpaper to level, with the surface flatness deviation being ≤3mm; S6, water and electricity pipe channel pre-burying; S7, floor pouring; S8, gypsum spray type wall construction: Outer wall: after installing polystyrene board in the light steel keel, lay galvanized steel mesh on the outer side of the outer wall and glass fiber mesh on the inner side of the outer wall; Inner partition wall: lay glass fiber mesh on both sides of the light steel keel; Spraying: spray gypsum mortar in 2 passes on each side, with the thickness being controlled within 40-60mm. The first pass is gridded and reinforced, and the second pass is sprayed and leveled; The spray gun pressure is 0.4-0.6MPa, the distance between the spray gun nozzle and the wall surface is 300-500mm, and the moving speed is 1-2m / min; after each pass of spraying, the curing time is ≥24h, and the final surface flatness deviation is ≤4mm.

2. The construction method of assembling the spray-built farmer self-built house according to claim 1, characterized in that: In step S1, the signal light chip stores the basic information of the workpieces in the packaging box, including the workpiece name and installation area, and the signal light chip is designed to be detachable and recyclable.

3. The construction method of assembling the spray-built farmer self-built house according to claim 1, characterized in that: In steps S1 to S2, the signal light chip is used to locate the position of the required workpiece, which is suitable for various building workpieces, including but not limited to various types of steel structural members and fastening bolts.

4. The construction method of assembling the spray-built farmer self-built house according to claim 1, characterized in that: In step S3, layered assembly type steel structure installation: After confirming the installation area and the corresponding workpieces, use manpower to stand the steel structure column on the foundation pre-buried steel plate, fix it with temporary steel support, and use a level to correct the verticality of the column. After positioning the axis with a total station, fasten it with pre-buried bolts; Use manpower to lift the cross beam to the column bracket, adjust the horizontal degree of the cross beam, and connect it with high-strength bolts after adjusting the horizontal degree of the cross beam. After installing the cross beam, use a laser level to detect the overall flatness of the steel structure; The roof light steel keel truss with a span of less than 6m is bolted to the top layer of columns, the distance between the trusses is less than 1.2m, and angle steel braces are installed as roof support members; The steel structure columns are installed in layers with a height of 3.0-3.3m per layer, the upper layer of columns is connected to the lower layer of columns through flanges, the connection is filled with fireproof sealant, and the roof light steel keel truss is bolted to the truss and the column after installation; S4, light steel keel arrangement: The outer wall keel is fixed along the steel structure column and connected by self-tapping screws, the number of screws at each connection point is greater than or equal to 2, the perpendicularity deviation of the keel is less than or equal to 3mm / m, and the horizontality deviation is less than or equal to 2mm / m; the inner partition wall keel is fixed at an interval of less than or equal to 1.0m, the top of the keel is fastened to the roof truss and the bottom is fastened to the floor embedded part by self-tapping screws, and a 50-80mm wide hollow cavity is reserved; The door and window hole periphery uses double-spliced C-shaped steel as a reinforcing keel, the reinforcing keel length exceeds the hole by 200mm up and down, and is locked with the main keel.

5. The construction method of assembling the spray-built farmer self-built house according to claim 1, characterized in that: In step S5, when laying the galvanized steel mesh, the mesh overlap width is greater than or equal to 50mm, fixed by self-tapping screws, and the screw spacing is less than or equal to 200mm; the OSB board and the fiber cement board are staggered, both of which are fixed by self-tapping screws; The total thickness of the gypsum mortar is 40-60mm.

6. The construction method of assembling the spray-built farmer self-built house according to claim 1, characterized in that: In step S6, water and electricity pipe trench pre-burying: Before pouring the floor concrete, PVC water supply pipes and drainage pipes are pre-buried at the designed position, and the PVC water supply pipes and drainage pipes are fixed on the light steel keel by iron wire. S7, floor pouring: Lay 0.8mm thick, 35mm high profiled steel plate, and fix the steel plate to the steel structure beam with self-tapping screws; lay fiber cement board on the groove of the profiled steel plate and fix it with self-tapping screws, then lay steel mesh on the fiber cement board, and then pour 100mm thick C30 fine stone concrete on the fiber cement board, use an inserted type vibrating rod to vibrate and compact, and use a trowel to finish the surface. After seven days, formwork is erected along the direction of the outer wall and inner partition wall light steel keel, the inner partition wall formwork height is 200mm, the width is 180mm, the outer wall formwork height is 300mm, the width is 180mm, and C20 fine stone concrete is poured in the formwork as a moisture-proof layer.

7. The construction method of assembling the spray-built farmer self-built house according to claim 1, characterized in that: In steps S5 and S8, the industrial by-product gypsum accounts for 90-95% of the gypsum mortar, the vitrified microbeads account for 3-8%, the quartz sand or heavy calcium accounts for 2-5%, and the additive accounts for 0.3-0.9%.

8. The construction method of assembling the spray-built farmer self-built house according to claim 1, characterized in that: The construction method of the assembled spray-built farmer self-built house further comprises the following steps: S9, door and window installation: Insert the door and window frame into the hole, fill the gap between the frame and the hole with polyurethane foam glue, and cut off the excess foam glue; apply silicone weather-resistant glue on the outside with a width of greater than or equal to 8mm, and seal the inside with gypsum mortar; then install the door and window leaf; S10, finishing board installation: The outer wall uses metal carved plate material with good weather resistance and water resistance, the inner partition wall uses bamboo-wood fiber board material, the indoor suspended ceiling needs to install light steel keel suspended ceiling, and lay 9mm thick calcium silicate board or gypsum board; the prefabricated board is fixed on the spray-built wall board with structural adhesive and self-tapping screws; For walls with waterproof requirements, first apply 3-5mm thick polymer waterproof anti-crack mortar and fully lay glass fiber mesh, and then paste tiles with special tile adhesive after drying.

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