CN111101594A

CN111101594A - Cold-formed thin-wall light steel structure building

Info

Publication number: CN111101594A
Application number: CN201911308295.8A
Authority: CN
Inventors: 付正义
Original assignee: Chengdu Langji Xingye Construction Engineering Co Ltd
Current assignee: Chengdu Langji Xingye Construction Engineering Co Ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-05-05

Abstract

The invention discloses a cold-bending thin-wall light steel structure building, which is formed by assembling aluminum-zinc-plated steel strips through cold-bending formed light steel keels, and comprises a bottom layer structure, an upper layer structure and a top layer structure from bottom to top; the bottom layer structure comprises a strip foundation, a bottom layer bottom beam, a joist and a plurality of parallel bottom layer cover beams, wherein the bottom layer bottom beam, the joist and the plurality of parallel bottom layer cover beams are arranged on the strip foundation; the upper layer structure comprises a floor end beam, an upper bottom beam, a top beam and a plurality of parallel upper cover beams, wherein the upper bottom beam, the top beam and the plurality of parallel upper cover beams are arranged on the floor end beam. The cold-bending thin-wall light steel structure building provided by the invention is formed by assembling aluminum-zinc-plated steel strips through cold-bending formed light steel keels, the construction period of an assembled structure is greatly shortened, dry operation is adopted in the construction process, wet operation is avoided, factory processing field assembly is realized, and the construction can be finished only by 'building block' type simple assembly; the construction period is short, and the field assembly is time-saving and labor-saving; the quality and the anti-seismic performance are superior to those of the traditional structure, and the management is convenient.

Description

Cold-formed thin-wall light steel structure building

Technical Field

The invention relates to the field of buildings, in particular to a cold-formed thin-wall light steel structure building.

Background

The green building saves various resources to the maximum extent within the whole life cycle of the building, meets the requirements of protecting the environment and reducing pollution, creates healthy, applicable and efficient living space for people, and enables the building to be harmonious with the nature. The building aims to reduce the damage of the building to the environment, and the healthier and natural living space is created on the premise of saving energy and resources.

The fabricated building refers to the main structural components of the building, which are not required to be fabricated on site, but are fabricated in a prefabrication site or a processing plant in advance, and then the fabricated building is transported to the site to be lifted, installed, connected and the like, and the fabricated building is assembled into a whole building like building blocks. The assembly type building is an important breakthrough for promoting the development of green buildings and promotes the development process of the green buildings in China. The assembly type building in the prior art usually adopts heavy steel as a main body structure, is heavy in weight, needs large-scale mechanical installation, and wastes time and labor.

Roof tiles are often required in fabricated buildings, and are tiles arranged on a sloping roof and generally hung on tile hanging strips. The roof tile hanging structure in the prior art mainly comprises a main structure, tile hanging strips, a water guiding strip and tile hanging, water seepage and long-time impression are poor, tiles are easy to displace, loosen and fall off, mortar sealed by the tile heads is not dense, rainwater covering the tile surface climbs to the inner side and drips down, and the tile roof leaks. Meanwhile, the joint of the cover tile is manufactured by a post-assembly method, so that the position is easy to be inclined, and water leaks downwards from the joint. In addition, the main body roof wood structure is easy to deform after a long time, so that the roof is loosened.

The outer wall in the prefabricated building usually adopts brick or brick concrete, plasters on it, and the painting (putty, wall brick etc.) is decorated, and its sound insulation effect is not good, and indoor outdoor air can not effective cycle, and heat preservation heat-proof quality is not good, and long service life, the outward appearance can take place to warp, is difficult for changing.

In addition, mortar is one of building materials with large application amount and wide application range in building engineering, and is widely applied to the engineering of building construction, plastering and the like. A large number of buildings are still on the mud wall in the current building engineering in China, and the building mortar used in the construction of masonry and plastering still mainly takes cement mortar or mixed mortar. At present, the existing mud wall and mortar have some defects: on one hand, the existing mortar is simple to match and poor in cohesiveness, so that the built mud wall is poor in crack resistance, water resistance and sealing performance, and the mud wall is cracked, perforated and weathered to fall; on the other hand, the existing mud wall has low strength and weak rain erosion resistance, so that the wall body is easy to deform due to erosion and the like.

Disclosure of Invention

In order to solve the problems, the invention aims to provide a cold-formed thin-wall light steel structure building which has the advantages of greatly shortened construction period, secondary utilization of materials, short construction period and time and labor saving in field assembly; the roof adopted by the building is relatively stable, long in service time and good in waterproof effect; the outer wall adopted by the building has good sound insulation and ventilation effects; the mortar adopted by the building has excellent cohesiveness, impermeability, compressive strength and water resistance.

In order to achieve the above purpose, the invention adopts the technical scheme that:

a cold-formed thin-wall light steel structure building is formed by assembling aluminum-zinc-plated steel strips through cold-formed light steel keels, and comprises a bottom layer structure, an upper layer structure and a top layer structure from bottom to top;

the bottom layer structure comprises a strip-shaped foundation, a bottom layer bottom beam, a joist and a plurality of parallel bottom layer cover beams, wherein the bottom layer bottom beam, the joist and the plurality of parallel bottom layer cover beams are arranged on the strip-shaped foundation; the upper layer structure comprises a floor end beam, an upper bottom beam, a top beam and a plurality of parallel upper cover beams, wherein the upper bottom beam, the top beam and the plurality of parallel upper cover beams are arranged on the floor end beam.

Further, the top layer structure includes the roofing, the roofing includes from last to the fine or green tile layer down, in the same direction as water strip layer, waterproof roll material layer, first OSB sheet layer, extrusion molding polyphenyl plate layer, second OSB sheet layer and sheet metal reinforcing bar roof truss, inlay a oar steel wire net layer in the same direction as water strip layer, the embedded horizontal wooden keel of extrusion molding polyphenyl plate layer, the embedded first glass cotton of sheet metal reinforcing bar roof truss.

Further, light steel construction building still includes the outer wall of outer end, the outer wall includes paper gypsum board layer, first eurosoma board layer, first fossil fragments, second eurosoma board layer, waterproof ventilative rete, second fossil fragments and outer wall intergral template from inside to outside, it is cotton to have the second glass between first fossil fragments, it has the XPS heated board to fill between the second fossil fragments.

Further, the light steel structure building still includes the interior wall at inner, the interior wall includes first fire prevention gypsum board layer, third Europe pine sheet layer, third fossil fragments, fourth Europe pine sheet layer and the second fire prevention gypsum board layer in proper order, it has the third glass cotton to fill between the third fossil fragments.

Further, the light steel structure building further comprises a floor at the upper end, and the floor comprises a cement fiber board layer, a sound-insulation shockproof cushion layer, a third OSB board layer and a structural keel from top to bottom.

Further, the thickness of the paper surface gypsum board layer is 10-12 mm; the thickness of the first Europe pine plate layer is 10-12 mm; the thickness of the second Europe pine plate layer is 10-12 mm; the thickness of the waterproof breathable film layer is 0.5-1 mm; the thickness of the outer wall integrated plate is 16-20 mm; the thickness of the second glass wool is 50-55 mm; the thickness of the XPS insulation board is 30-35 mm.

Further, the light steel structure building still includes the yellow mud wall of outer end, steel wire net piece and asbestos gauge have been laid in proper order on the wall body of yellow mud wall, the asbestos gauge is provided with a plurality of mountings at the online interval, the asbestos gauge scribbles the outer wall mortar in the one side of keeping away from the steel wire net piece.

Further, the materials of the external wall mortar comprise yellow mud, straw segments and rice water, and the materials of the yellow mud comprise fine sand, yellow clay, lime and cement.

Further, the materials of the exterior wall mortar comprise, by weight, 1-2 parts of yellow mud, 0.2-0.5 part of straw segments and 0.2-0.6 part of rice water.

Further, the mass ratio of the fine sand to the yellow clay to the lime to the cement is 2-2.5:1-2:1-2: 0.5-1.

The invention has the beneficial effects that:

the cold-bending thin-wall light steel structure building provided by the invention is formed by assembling aluminum-zinc-plated steel strips through cold-bending formed light steel keels, the construction period of an assembled structure is greatly shortened, the construction process adopts dry operation, wet operation is avoided, factory processing and field assembly are realized, the construction can be completed only through simple assembly in a building block building mode, the construction period is short, and the field assembly is time-saving and labor-saving; the quality and the seismic performance are superior to those of the traditional structure, and the management is convenient; the building uses environment-friendly and energy-saving materials, and waste materials can be recycled; the light steel structure used for the building has light dead weight, meets the requirements on structural performance and can be manually installed.

According to the roof provided by the invention, the green tile layer, the water-guiding strip layer, the waterproof coiled material layer, the first OSB plate layer, the extruded polystyrene plate layer, the second OSB plate layer and the like are connected layer by layer, so that the structure is stable, and the roof is not easy to shift for a long time; the waterproof coiled material is subjected to waterproof treatment, so that the waterproof effect is good; the extruded polystyrene board is heat-insulating, and the glass wool is heat-insulating and sound-absorbing, so that the heat-insulating effect is good; the water seepage of the house is further improved, and the stability of the structure enables the roof tile to maintain the appearance and the impermeability of the roof tile for a long time.

According to the outer wall provided by the invention, the paper gypsum board layer, the first Europe pine board layer, the first keel, the second Europe pine board layer, the waterproof breathable film layer, the second keel and other layer-by-layer structures are arranged, so that the waterproof breathable film has a breathable function while enhancing the water tightness of a building, moisture is smoothly discharged, indoor air effectively circulates, and a circulating system is formed with the outside, so that the service life of the building is effectively prolonged, the functions of heat preservation, energy conservation and improvement of living environment are achieved.

According to the outer wall provided by the invention, the glass wool and the heat-insulation board are fully laid in the whole frame wall body, so that the outer wall has a sound-absorbing effect and strong sound-insulating property, and the outer wall has a better sound-insulating effect; meanwhile, the heat insulation performance is good, the wall body is integrated, the assembly is rapid, the cleaning is easy, the material can be reutilized, and the novel environment-friendly effect is achieved; in addition, after the outer wall integrated plate is damaged, the plate surface can be detached to install a new plate surface, and the outer wall can be detached and replaced.

The external wall mortar provided by the invention takes fine sand, yellow clay, lime and cement as raw materials of yellow mud; wherein, the fine sand can increase the sand content of the yellow mud; the yellow clay can increase the cohesiveness, and meanwhile, lime reacts with the yellow clay, so that the effects of improving the anti-permeability capacity, compressive strength and water resistance of the yellow clay are achieved; the cement can improve the stability of the yellow mud wall, and the effect of improving the water resistance, the sealing property and the integrity of the wall body is achieved.

The external wall mortar provided by the invention achieves the effect of improving the viscosity of yellow mud by adding the rice water; by adding the straw sections, the effects of integrating the wall body, improving the bonding property and the attractive appearance of materials are achieved. The yellow mud wall is formed by adding the external wall mortar, the asbestos meshes and the steel wire meshes, so that the yellow mud wall does not fall off and does not crack.

Drawings

FIG. 1 is a schematic structural view of a cold-formed thin-walled light steel structural building of the present invention;

FIG. 2 is a schematic structural view of the roof of the present invention;

FIG. 3 is a schematic view of the structure of the floor of the present invention;

FIG. 4 is a schematic structural view of the outer wall of the present invention;

FIG. 5 is a schematic view of the structure of the interior wall of the present invention;

in the figure: 1. a substructure; 11. a strip foundation; 12. a bottom sill; 13. a joist; 14. a bottom capping beam; 2. an upper layer structure; 21. an end beam of the floor system; 22. an upper floor beam; 23. a top beam; 24. an upper capping beam; 3. a top layer structure; 31. a green tile layer; 32. the base oar steel wire mesh layer; 33. a water-guiding strip layer; 34. a waterproof roll layer; 35. a first OSB ply; 36. extruding a polystyrene board layer; 37. a second OSB ply; 38. a sheet steel skeleton roof truss; 4. an outer wall; 41. a paper-faced gypsum board layer; 42. a first Eurotch sheet layer; 43. a first keel; 44. a second Eurotch sheet layer; 45. a waterproof breathable film layer; 46. a second keel; 47. an exterior wall integrated plate; 48. second glass wool; 5. an inner wall; 51. a first fire resistant gypsum board layer; 52. a third eurotryson lamina layer; 53. a third keel; 54. a fourth eurotryson lamina layer; 55. a second layer of fire-resistant gypsum board; 6. a floor surface; 61. a cement fiberboard layer; 62. a sound-insulating and shock-proof cushion layer; 63. a third OSB ply; 64. a structural keel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

A cold-formed thin-wall light steel structure building is shown in figure 1 and is formed by assembling aluminum-zinc-plated steel strips through cold-formed light steel keels, and comprises a bottom layer structure 1, an upper layer structure 2 and a top layer structure 3 from bottom to top;

the bottom layer structure 1 comprises a strip-shaped foundation 11, a bottom layer bottom beam 12, a joist 13 and a plurality of parallel bottom layer cover beams 14, wherein the bottom layer bottom beam 12, the joist 13 and the plurality of parallel bottom layer cover beams are arranged on the strip-shaped foundation 11; the superstructure 2 comprises a floor end beam 21 and upper floor beams 22, top beams 23 and a plurality of parallel upper deck cover beams 24 mounted on the floor end beam 21.

The cold-formed thin-walled light steel structure building in the embodiment is formed by assembling aluminum-zinc-plated steel strips through cold-formed light steel keels, and the aluminum-zinc-plated steel strips for light steel integrated house construction are formed by solidifying aluminum-iron-zinc-silicon at a high temperature of 600 ℃ to form a dense alloy material of quaternary crystals. The design service life of the house structure can reach more than 50 years, and the seismic level fortification intensity of the house can reach 8 degrees. The strength characteristics of the reliable connections and steel provide natural resistance to earthquakes and hurricanes. The high toughness of steel makes it the best building material of choice in earthquake defense design.

The main body member is transported to a construction site for assembly after being manufactured in a processing factory, then is hoisted, and then is sequentially subjected to one-layer wallboard construction, roof truss construction, roof construction, connecting piece construction, composite roof installation, outer wall construction and the like. The construction period is greatly shortened by adopting an assembled structure, the construction process adopts dry operation, the construction can be completed only by simply assembling building blocks on site, and the assembly is carried out on site in factory processing without wet operation; the cold-formed thin-wall light steel structure building is produced industrially in a large scale, the factory prefabrication rate is high, the labor cost of a construction site is greatly reduced, the construction period is short, and the time and the labor are saved during the site assembly; the quality and the seismic performance are superior to those of the traditional structure, and the management is convenient; the building uses environment-friendly and energy-saving materials, and waste materials can be recycled, such as light steel, cement fiber boards, European pine boards and the like.

Example 2

Further improvement is made on the basis of implementing 1 to this embodiment, as shown in fig. 2, top layer structure 3 includes the roofing, and the roofing includes from last to the fine tile layer 31 down, in the same direction as water strip layer 33, waterproof roll material layer 34, first OSB sheet layer 35, extrusion molding polyphenyl sheet layer 36, second OSB sheet layer 37 and sheet steel skeleton roof truss 38, in the same direction as embedded a oar wire mesh layer 32 of water strip layer 33, the embedded horizontal wooden keel of extrusion molding polyphenyl sheet layer 36, the embedded first glass wool of sheet steel skeleton roof truss 38.

In this embodiment, the green tile layer 31 is an outermost layer structure of the roof, and is used for roof rainwater evacuation and external feeling; the sitting oar steel wire mesh layer 32 is used for laying roof tiles and has a certain waterproof function; the water-distributing strip layer 33 is used for the integrity, rapidness and convenience of the roof; the waterproof roll material layer 34 is used for the leakage-free connection between the roof and the house; the first OSB ply 35 is used to provide lay down and stabilization of the waterproofing membrane, protecting the middle extruded polystyrene board; the extruded polystyrene board layer 36 is used for heat preservation and insulation; the second OSB ply 37 is used to protect the extruded polystyrene board and the glass wool in the steel skeleton roof truss; the thin plate steel skeleton roof truss 38 is used for bearing the whole roof truss; the transverse wood keel is used for stabilizing and protecting the extruded polystyrene board so as to prevent the extruded polystyrene board from being damaged; the first glass wool is used for heat preservation, heat insulation and sound absorption, and has the advantages of thermal conductivity , heat preservation, heat insulation, good sound absorption performance, corrosion resistance and stable chemical performance. Through the structure from top to bottom, the roof achieves the purpose of water impermeability, and has the advantages of good heat preservation and heat insulation performance, strong roof integrity and long service life.

In the embodiment, the green tile layer 31 is a light small green tile, the water-flowing strip layer 33 is made of 30 multiplied by 60mm water-flowing strips, and the water-flowing strips are subjected to insect prevention and rust prevention treatment; the first OSB board layer is 11.1mm thick, and primer oil is brushed cold; extruding a polystyrene board layer with the thickness of 30 mm; the second OSB ply was 15.1mm thick. The base paddle steel wire mesh layer 32 comprises a base paddle and a steel wire mesh, the base paddle is used for jacking and leveling, tile laying is facilitated, and the steel wire mesh is used for avoiding cracking of mortar. The seat oar is made of cement lime mortar. The waterproofing membrane layer 34 is a self-adhesive waterproofing membrane.

The roof is constructed as follows:

1. the light steel structure is connected with the main body framework structure through bolts to form a whole, a top-sealing suspended ceiling is arranged at the indoor side, first glass wool is arranged in the sheet steel skeleton roof truss 38, and the first glass wool is laid neatly;

2. after the first glass wool is placed, laying a second OSB plate outside the thin plate steel rib roof truss 38, laying the second OSB plate orderly and seamlessly, and connecting the second OSB plate to the thin plate steel rib roof truss 38 by using screws;

3. fully paving an extruded polystyrene board with the thickness of 30mm on the second OSB board, wherein the second OSB board is required to be smoothly spliced well, and fixing transverse wood keels with the spacing of 600mm are connected with the second OSB board through screws;

4. after the extruded polystyrene board is finished, a first OSB board is arranged on the extruded polystyrene board and connected with the wood keel screws;

5. after the first OSB plate is installed flatly and seamlessly, brushing cold base oil to overlap the waterproof coiled material, wherein the waterproof coiled material is horizontal to a ridge, the waterproof coiled material is laid from the eave to the ridge from bottom to top, the overlapping length is not less than 15cm, and the whole roof is fully laid;

6. carrying out setting grout treatment on the whole roof, uniformly laying for 2cm, placing a steel wire mesh while laying, reinforcing the whole net sheets when placing the steel wire mesh, connecting the net sheets by using binding wires, and connecting the reserved main body light steel structure at the ridge or the outer wall by using a 1mm steel plate;

7. the roof tiles are positioned and scribed before being laid, and then are tiled, and 2-3 layers of eave tile covers are prevented from falling off.

The whole roof structure is connected layer by layer, and the waterproof layer and the heat-insulating layer are arranged, so that the roof structure provided by the invention has the advantages of stable structure, long time, difficulty in displacement and good waterproof effect.

Example 3

In this embodiment, a further improvement is made on the basis of embodiment 1 or 2, as shown in fig. 4, the light steel structure building further includes an outer wall 4 at an outer end, the outer wall 4 includes a paper surface gypsum board layer 41, a first europa board layer 42, a first keel 43, a second europa board layer 44, a waterproof breathable film layer 45, a second keel 46 and an outer wall integrated board 47 from inside to outside, a second glass wool 48 is filled between the first keels 43, and an XPS insulation board is filled between the second keels 46.

Specifically, the thickness of the paper gypsum board layer 41 is 10 mm; the thickness of the first eurotraya ply 42 is 10 mm; the thickness of the second eurotraya sheet layer 44 is 10 mm; the thickness of the waterproof breathable film layer 45 is 0.5 mm; the thickness of the outer wall integrated plate 47 is 20 mm; the thickness of the glass wool 48 is 50 mm; the thickness of the XPS insulation board is 30 mm.

In this embodiment, the paper-faced gypsum board layer 41 is used for ventilation and heat resistance, and has good ventilation performance, good heat permeability resistance and good appearance quality; the first Europe pine sheet layer 42 is used for being directly connected to the first keel 43, so that the glass wool is ensured to be leveled and unchanged in the first keel 43, and an attachment fixing point is provided for the gypsum board on the indoor side; the first keel 43 is a main body bearing maintenance structure; the second Europe pine plate layer 44 is used for being directly connected to the first keel 43, so that the glass wool is ensured to be flat and unchangeable in the first keel 43, the outer breathable film can be flatly laid on the first keel, and vulnerable materials on the inner side and the outer side are protected; the waterproof breathable film layer 45 is used for smoothly discharging moisture, so that the service life of a building is effectively prolonged, and the functions of heat preservation, energy conservation and improvement of living environment are achieved; the second keel 46 is used for mounting of an exterior wall hanging piece, such as a heat insulation board mounted in the second keel; the exterior wall integrated plate 47 is used for waterproofing, and has good appearance preservation; the second glass wool 48 is used for heat preservation, heat insulation and sound absorption, and has low heat conductivity, good heat preservation and heat insulation, good sound absorption performance and stable chemical performance; the XPS heat-insulating plate is used for heat insulation, water resistance, moisture resistance and sound insulation, and has light weight, high hardness and high compressive strength.

The exterior wall 4 in this embodiment is specifically constructed as follows:

and (3) inner side installation:

1. the light steel structure is spliced, bolted and riveted to form a main body bearing frame structure, namely a first keel 43;

2. placing second glass wool 48 in the first keel 43, wherein the second glass wool is required to be flat and leak-free, then installing the Europe pine boards on two sides of the first keel 43, namely installing the first Europe pine board layer 42 and the second Europe pine board layer 44, wherein the Europe pine boards are required to be flat and seamless, and connecting the Europe pine boards on the first keel 43 by using screws;

3. a gypsum plaster board is installed on the indoor side and is attached to the first euro-pine sheet layer 42 with a tapping screw.

And (3) outer side installation:

1. after the second European pine board layer 44 is installed, laying and installing the waterproof breathable film, wherein before installation, the surface of the European pine board must be cleaned to ensure cleanness without impurities, and then the breathable film is laid to ensure the flatness of the breathable film;

2. the second keel 46 is installed and comprises a transverse keel and a vertical keel, the transverse keel and the vertical keel are fixedly connected on a second European pine board through screws, the XPS heat-insulation board is embedded after the transverse keel is fixedly installed in the installation process, the second European pine board is fully paved at each position, then the vertical keel is installed on the transverse keel, and meanwhile, the heat-insulation board is fixed;

3. the exterior wall integrated plate 47 is connected to the vertical keel of the second keel 46 through a self-tapping screw, and certain edges and keels are embedded and spliced to form an exterior wall surface.

Due to the waterproof breathable film, the waterproof breathable film has a breathable function while enhancing the water tightness of the building, moisture is smoothly discharged, indoor air effectively circulates, and a circulating system is formed between the indoor air and the outside, so that the service life of the building is effectively prolonged, the functions of heat preservation, energy conservation and improvement of living environment are achieved.

Example 4

This embodiment is further improved on the basis of any of the embodiments 1 to 3, as shown in fig. 5, the light steel structure building further includes an inner wall 5 at the inner end, the inner wall 5 includes a first fireproof gypsum board layer 51, a third eurosoma board layer 52, a third keel 53, a fourth eurosoma board layer 54 and a second fireproof gypsum board layer 55 in sequence, and a third glass wool 56 is filled between the third keel 53.

In this embodiment, the first fire-resistant gypsum board layer 51, the third eurosoma board layer 52, the third keel 53, the fourth eurosoma board layer 54, the second fire-resistant gypsum board layer 55 and the third glass wool 56 function similarly to the structures of the layers in the outer wall 4, and will not be described again.

Example 5

This embodiment is further improved on the basis of any of embodiments 1 to 4, and as shown in fig. 3, the light steel structure building further comprises a floor 6 at the upper end, and the floor 6 comprises a cement fiberboard layer 61, a sound-proof and vibration-proof cushion layer 62, a third OSB slab layer 63 and a structural keel 64 from top to bottom.

In this embodiment, the cement fiberboard layer 61, the soundproof shock-proof cushion layer 62, the third OSB layer 63 and the structural keel 64 function similarly to the respective structures of the roof and the outer wall, and will not be described again.

Example 6

In this embodiment, a further improvement is made on the basis of any embodiment of 1 to 5, the light steel structure building further comprises a yellow mud wall at the outer end, a steel wire mesh and an asbestos gauze are sequentially laid on the wall body of the yellow mud wall, a plurality of fixing pieces are arranged on the asbestos gauze at intervals, and external wall mortar is coated on one side of the asbestos gauze, which is far away from the steel wire mesh.

Specifically, the yellow mud wall is installed on the external wall insulation board of the light steel structure building, the effect of the yellow mud wall is to increase the appearance aesthetic feeling, the yellow mud wall has the field and garden performance, and the overall layout of the building is good. The steel wire mesh and the asbestos meshes are paved, so that all parts of the yellow mud wall are stressed uniformly, the adhesion of all parts is facilitated, and the effect of preventing the yellow mud wall from falling and cracking is achieved. The spacing distance of a plurality of fixing pieces is 0.8-1m, the effect that the asbestos meshes do not shift and fold is achieved, and the fixing pieces are rivets in the embodiment.

The materials of the external wall mortar comprise yellow mud, straw sections and rice water, and the materials of the yellow mud comprise fine sand, yellow clay, lime and cement.

The material of the external wall mortar comprises 1-2 parts of yellow mud, 0.2-0.5 part of straw segments and 0.2-0.6 part of rice water in parts by weight. The rice soup can improve the viscosity of yellow mud, so that the yellow mud wall is easier to form, and the storage time and the appearance fineness are improved; the straw sections are added, so that the straw sections can be pulled and combined in the whole wall, and the effects of integrating the wall, improving the pulling and bonding performance between materials and improving the attractiveness are achieved.

The mass ratio of the fine sand to the yellow clay to the lime to the cement is 2-2.5:1-2:1-2: 0.5-1. The fine sand can increase the sand content of the yellow mud, so that the effect of increasing the viscosity is achieved; the fine sand and the cement form a mixture and react with water, so that the cement is hardened to wrap the fine sand, and meanwhile, the hanging performance can be improved by mixing the lime with the cement; the yellow clay can increase the caking property, and meanwhile, the lime reacts with a small amount of active silica and alumina on the surfaces of yellow clay particles and calcium hydroxide to generate hydraulic calcium silicate hydrate and calcium aluminate hydrate, so that the effects of improving the impermeability, compressive strength and water resistance of the yellow clay are achieved; the cement can improve the stability of the yellow mud wall, and the effect of improving the water resistance, the sealing property and the integrity of the wall body is achieved.

The preparation method of the exterior wall mortar comprises the following steps:

s1, weighing yellow mud, straw sections and rice water according to a ratio;

s2, smashing the yellow mud to obtain pasty yellow mud;

and S3, uniformly mixing the straw sections, the rice water and the pasty yellow mud to obtain the external wall mortar.

The yellow mud wall in the embodiment is adopted to carry out the following five groups of experiments, and the parameters of each group of experiments are as follows:

TABLE 1 five groups of experimental parameters

	Parts of yellow mud	Fraction of straw	Parts of rice soup	Fine sand, yellow clay, lime and water mass ratio
					Experimental group 1	1	0.2	0.2	2:1:1:0.5
Experimental group 2	1.5	0.3	0.4	2.2:1.5:1.5:0.8
					Experimental group 3	2	0.5	0.6	2.5:2:2:1
Experimental group 4	1	0.5	0.6	2:2:2:0.5
					Experimental group 5	2	0.2	0.5	2.5:1:1:1

Control group

Control group 1: the experimental group 1 of the invention is compared with the control group 1, wherein the exterior wall mortar in the control group 1 comprises yellow mud, straw segments and water, wherein the yellow mud comprises fine sand, yellow clay, lime and cement, and the other components such as the dosage, the preparation method, the structure of the yellow mud wall and the like are the same as those in the experimental group 1 of the invention (the control group is compared with the control group without rice water, and is used for proving that the exterior wall mortar of the invention has better performance and cohesiveness and the obtained yellow mud wall has better performance).

Control group 2: the experimental group 1 and the control group 2 are compared, wherein the exterior wall mortar in the control group 2 comprises yellow mud, straw sections and rice water, wherein the yellow mud comprises fine sand, lime and cement, and the dosage, the preparation method, the structure of the yellow mud wall and the like are the same as those in the experimental group 1 (the control group is compared with the control group without adding yellow clay, and is used for proving that the exterior wall mortar has better cohesiveness, impermeability, compressive strength and water resistance, and the performance of the obtained yellow mud wall is better).

Control group 3: the experimental group 1 and the control group 3 are compared, wherein the wall surface of the yellow mud wall in the control group 3 is not paved with the steel wire mesh, and other parts such as the dosage, the preparation method, the yellow mud wall structure and the like are the same as those of the experimental group 1 (the comparison group is compared with the control group without the steel wire mesh, and is used for proving that the performance of the yellow mud wall obtained by the invention is better).

Control group 4: the experimental group 1 and the control group 4 are compared, wherein asbestos gauze is not laid on the wall surface of the yellow mud wall in the control group 4, and other parts such as the dosage, the preparation method and the yellow mud wall structure are the same as those of the experimental group 1 (the comparison group is compared with the control group without asbestos gauze, and is used for proving that the performance of the yellow mud wall obtained by the invention is better).

The test effect is as follows:

1. in order to verify the performance of the exterior wall mortar, the exterior wall mortar in experimental groups 1-5 and comparison groups 1-2 is subjected to performance tests, and test indexes comprise cohesiveness, impermeability, compressive strength and water resistance. The test results are shown in the following table:

TABLE 2 exterior wall mortar Properties

As can be seen from the above table, compared with the experimental group 1, the bonding strength of the control group 1 was reduced by 17.14%, and the compressive strength and the permeability coefficient were not significantly changed; the bonding strength of the control group 2 was reduced by 11.43%, the compressive strength was reduced by 14.99%, and the permeability coefficient was reduced by 18.06%.

2. In order to verify the performance of the yellow mud wall, the yellow mud walls in the experimental groups 1-5 and the control groups 1-4 are subjected to performance tests, and the test indexes comprise waterproofness, anti-dropping property, anti-cracking property and scouring resistance. The test results are shown in the following table:

TABLE 3 yellow mud wall Properties

As can be seen from the above table, the water repellency of the control group 1 was not significantly changed, and the water repellency of the control groups 2 to 4 was significantly decreased, as compared to the experimental group 1; compared with the experimental group 1, the flushing resistance of the control groups 1 to 4 is obviously reduced, and the flushing depth is improved by 34.78 to 69.57 percent; compared with the experimental group 1, the control groups 1-2 have slight cracking and falling phenomena, and the control groups 3-4 have obvious cracking and falling phenomena.

In conclusion, the external wall mortar disclosed by the invention achieves the effects of improving the cohesiveness, the impermeability, the compressive strength and the water resistance by adding the rice water and adopting the fine sand, the yellow clay, the lime and the cement as the raw materials of the yellow clay; the yellow mud wall disclosed by the invention achieves the effects of improving the scouring resistance and preventing the wall from cracking and even falling off by adding the external wall mortar, the asbestos gauze and the steel wire mesh.

The construction application project comprises the following steps: the international health-preserving source I manor is located in Hongshouzhengzhenhe village in Chengdu Mali county, is in a cold-formed thin-wall light steel structure, has the construction area of about 2000 square meters and has the construction date of 2019, 8 and 1 month and the completion date of 2019, 9 and 20 months (one batch), and has good application effect, good appearance and vertical surface and quick construction period.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A cold-formed thin-wall light steel structure building is characterized in that the light steel structure building is formed by assembling aluminum-zinc-plated steel strips through cold-formed light steel keels, and comprises a bottom layer structure (1), an upper layer structure (2) and a top layer structure (3) from bottom to top;

the bottom layer structure (1) comprises a strip-shaped foundation (11), a bottom layer bottom beam (12) arranged on the strip-shaped foundation (11), a joist (13) and a plurality of parallel bottom layer cover beams (14); the upper layer structure (2) comprises a floor end beam (21), an upper bottom beam (22), a top beam (23) and a plurality of parallel upper cover beams (24), wherein the upper bottom beam, the top beam and the plurality of parallel upper cover beams are arranged on the floor end beam (21).

2. The light steel structure building of claim 1, characterized in that the top layer structure (3) comprises a roof, the roof comprising from top to bottom a layer of green tiles (31), a layer of water-oriented strips (33), a layer of waterproof coil material (34), a first layer of OSB sheeting (35), a layer of extruded polystyrene sheeting (36), a second layer of OSB sheeting (37) and a sheet steel skeleton (38), the layer of water-oriented strips (33) having embedded therein a layer of steel wire mesh with seat paddles (32), the layer of extruded polystyrene sheeting (36) having embedded therein transverse wood joists, the sheet steel skeleton (38) having embedded therein first glass wool.

3. The lightweight steel structural building of claim 1, further comprising an outer end exterior wall (4), wherein the exterior wall (4) comprises an inside-out paper gypsum board layer (41), a first Europa board layer (42), a first keel (43), a second Europa board layer (44), a waterproof breathable film layer (45), a second keel (46) and an exterior wall integrated board (47), wherein a second glass wool (48) is filled between the first keels (43), and an XPS insulation board is filled between the second keel (46).

4. The lightweight steel structural building of claim 1, further comprising an inner wall (5) at an inner end, wherein the inner wall (5) comprises a first fireproof gypsum board layer (51), a third eurosoma board layer (52), a third keel (53), a fourth eurosoma board layer (54) and a second fireproof gypsum board layer (55) in sequence, and a third glass wool (56) is filled between the third keel (53).

5. The light steel structural building of claim 1, further comprising a floor (6) at an upper end, the floor (6) comprising, from top to bottom, a cement fiberboard layer (61), an acoustic and shock absorbing underlayment (62), a third OSB layer (63), and a structural keel (64).

6. A lightweight steel structural building according to claim 3, characterized in that the thickness of the paper-faced gypsum board layer (41) is 10-12 mm; the thickness of the first Orona sheet layer (42) is 10-12 mm; the thickness of the second eurosoma layer (44) is 10-12 mm; the thickness of the waterproof breathable film layer (45) is 0.5-1 mm; the thickness of the outer wall integrated plate (47) is 16-20 mm; the thickness of the second glass wool (48) is 50-55 mm; the thickness of the XPS insulation board is 30-35 mm.

7. A light steel structure building according to any one of claims 1-6, characterized in that the light steel structure building further comprises an outer yellow mud wall, a steel wire mesh and an asbestos net are sequentially laid on the wall of the yellow mud wall, a plurality of fixing pieces are arranged on the asbestos net at intervals, and the side of the asbestos net far away from the steel wire mesh is coated with outer wall mortar.

8. The light steel construction building of claim 7, wherein the material of the exterior wall mortar includes yellow mud, straw segments and rice water, and the material of the yellow mud includes fine sand, yellow clay, lime and cement.

9. The light steel structure building of claim 8, wherein the materials of the exterior wall mortar comprise, by weight, 1-2 parts of yellow mud, 0.2-0.5 parts of straw segments and 0.2-0.6 parts of rice water.

10. The light steel structure building of claim 8, wherein the mass ratio of the fine sand, the yellow clay, the lime and the cement is 2-2.5:1-2:1-2: 0.5-1.