Assembled self-insulating recycled concrete block wall and construction method thereof

Abstract

The invention discloses an assembled self-insulating recycled concrete block wall and a construction method thereof, wherein the wall comprises a beam-column system, a structural layer and a decorative layer; the decorative layer is fitted with one side of the structural layer; the beam-column system comprises an upper side beam, a lower side beam, a left column and a right column; the structural layer is a multi-layer masonry, and the multi-layer masonry comprises several layers of walls built by main blocks, a layer of walls built by secondary blocks, and end blocks; a left column and a right column are respectively arranged at both ends of the lower side beam; the structural layer is built on the lower side beam and is located between the left column and the right column; an upper side beam is arranged at the top of the structural layer; a first notch and a first convexity are respectively arranged on the outer sides of the left column and the right column; a second convexity is arranged at the top of the upper side beam, and a second notch is arranged at the bottom of the lower side beam. By arranging a special connector to connect the structural layer and the decorative layer, the assembly is convenient and the splicing efficiency can be greatly improved.

Description

Technical Field

[0001] The invention belongs to the field of civil engineering technology, and in particular relates to an assembled self-insulating recycled concrete block wall and a construction method thereof. Background Art

[0002] Recycled concrete mainly comes from the demolition of old and dangerous buildings. With the development of our country, the discharge of waste concrete has increased rapidly. Using it as recycled aggregate in modern construction can realize the resource utilization of construction waste and conform to our country's sustainable development strategy. Therefore, the use of recycled concrete, a green material, is bound to be a market trend.

[0003] As problems in the environment, construction efficiency and social economy of buildings based on traditional construction methods gradually emerge, such as large amount of wet work on the construction site, long construction period and environmental pollution, prefabricated buildings are gaining more and more attention. However, after the main structure construction is completed, there are still many problems in the decoration design of the interior of the building, especially the confusion of water and electricity pipelines.

[0004] At present, the layout of water and electricity pipelines in prefabricated buildings adopts the method of external application of pipelines, which requires cutting grooves in the walls and the ground. This not only sacrifices the clearance height and destroys the wall structure, but also increases the construction cost and generates construction waste. More importantly, the external application method is used to lay the pipelines, and there is basically no possibility of later modification. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a prefabricated self-insulating recycled concrete block wall and a construction method thereof in view of the deficiencies in the above-mentioned prior art. The prefabricated wall is energy-saving and waste-recycling, simple to construct, has good overall performance, low comprehensive cost, and flexible pipeline layout. The prefabricated wall construction technology of the present invention can not only perfectly solve the above-mentioned problems, but also has the advantages of saving energy consumption, reducing environmental pollution, and improving construction efficiency, and is better accepted by people.

[0006] The present invention adopts the following technical solutions:

[0007] An assembled self-insulating recycled concrete block wall comprises a beam-column system, a structural layer and a decorative layer, wherein the decorative layer is fitted to the inner side of the structural layer; the beam-column system is arranged above the structural layer;

[0008] The structural layer is a multi-layer masonry, which is stacked with staggered joints. The multi-layer masonry includes several layers of walls built by main blocks, one layer of wall built by secondary blocks, and end blocks; the end blocks are used to fill the gaps formed by the stacking of main blocks and secondary blocks;

[0009] The beam-column system includes an upper beam, a lower beam, a left column and a right column; a left column and a right column are respectively arranged at both ends of the lower beam; the structural layer is built on the lower beam and is located between the left column and the right column; an upper beam is arranged on the top of the structural layer.

[0010] Specifically, a circular pipe in the Z direction is arranged in the middle of the long side of the upper end face of the main building block, and the first semicircular pipeline grooves in the Z direction are arranged at the two ends of the short side of the upper end face of the main building block; the second semicircular pipeline grooves in the Y direction are arranged at the long side of the upper end face and the long side of the lower end face of the main building block; X-direction switch box grooves are arranged on the side faces at both ends of the main building block to form secondary building blocks; the main building block is cut along the center line parallel to the short side of the upper end face to form an end building block.

[0011] Furthermore, the first semicircular pipeline troughs of the left and right adjacent main building blocks or secondary building blocks or end building blocks are combined to form a first circular pipeline trough, and the second semicircular pipeline troughs of the upper and lower adjacent main building blocks or secondary building blocks or end building blocks are combined to form a second circular pipeline trough, and the first circular pipeline trough is connected to the circular pipes on the upper and lower adjacent main building blocks or secondary building blocks; the switch box grooves on the two left and right adjacent secondary building blocks are combined to form a switch box; the switch box is connected to the first circular pipeline trough.

[0012] Furthermore, an external hole is provided on the decorative layer, and the external hole is arranged corresponding to the switch box for arranging a switch or a power socket.

[0013] Furthermore, the decorative layer is installed on the structural layer through a connecting piece; the connecting piece includes a steel sheet, one end of which is connected to the back of the C-shaped fixing sheet, and the other end is connected to one side of the T-shaped fixing sheet; a threaded hole is provided on the T-shaped fixing sheet; the C-shaped fixing sheet is installed in the circular pipe, and the back of the C-shaped fixing sheet fits the circular pipe; the T-shaped fixing sheet is fixed to the decorative layer by bolts; the steel sheet is installed between two layers of masonry.

[0014] Specifically, the main building block is provided with staggered air layers on one side of the long sides of the upper and lower end surfaces; and the middle of the main building block is provided with two Z-direction holes for filling with thermal insulation materials such as foam concrete.

[0015] Specifically, the outer sides of the left column and the right column are respectively provided with a first recess and a first protrusion; the top of the upper side beam is provided with a second protrusion, and the bottom of the lower side beam is provided with a second recess.

[0016] Specifically, the reinforcement of the beam-column system includes the beam end section and the column section. The beam end section is specifically:

[0017] Determine the cross-sectional area of ​​the longitudinal reinforcement at the bottom of the beam according to the height of the compression zone, select and arrange the reinforcement according to the determined cross-sectional area of ​​the longitudinal reinforcement at the bottom of the beam, and use the actual reinforcement diameter and reinforcement area to determine whether the actual reinforcement ratio meets the following conditions:

[0018]

[0019] Among them, f td A is the axial tensile strength of concrete; s is the cross-sectional area of ​​the reinforcement, b is the width of the beam, h0 is the effective height of the section, h is the height of the section, ρ min is the minimum reinforcement ratio of the longitudinal reinforcement at the bottom of the beam, f sd Design strength of longitudinal reinforcement at the bottom of beam;

[0020] If the actual reinforcement ratio does not meet the above conditions, the longitudinal tensile reinforcement shall be Configuration; if x>ξ b h0, x is the height of the compression zone, ξ b is the height of the relative limit concrete compression zone, a double-reinforced rectangular section is used, and the cross-sectional area A of the reinforcement is obtained. s and the cross-sectional area of ​​all longitudinal reinforcement A s 'Select the diameter and number of tensile and compressive steel bars respectively, and arrange the cross-sectional steel bars;

[0021] The column cross-section is as follows:

[0022] According to the cross-sectional area A of the column, the calculated length l0, and the design value of the axial bearing capacity N, the cross-sectional area A of all longitudinal reinforcements is calculated. s ', according to the obtained A s ' and structural requirements to select and arrange steel bars.

[0023] Another technical solution of the present invention is a construction method of an assembled self-insulating recycled concrete block wall, comprising the following steps:

[0024] S1. Pre-embed longitudinal reinforcement at the end of the lower side beam, and the upper end of the longitudinal reinforcement extends into the upper side beam;

[0025] The main blocks, secondary blocks and end blocks are used for mortar masonry on the lower side beams. During masonry, the C-shaped fixing pieces are placed in the second semicircular pipeline grooves provided at the long side positions of the upper end faces of the main blocks and the long side positions of the lower end faces, and the T-shaped fixing pieces are exposed outside the masonry; the first semicircular pipeline grooves provided at the two ends of the short side of the upper end faces of the main blocks are connected to the circular pipes on the upper and lower adjacent main blocks or secondary blocks, and the switch dark box grooves on the two adjacent secondary blocks on the left and right are combined to form a switch dark box, so that the switch dark box is connected to the first circular pipeline groove; after paving three layers of masonry, the corresponding layer of transverse tie steel bars are arranged on the transverse ribs of the third layer of masonry; after paving a masonry with a height of six main blocks and a width of four main blocks, a decorative layer of the same size as the corresponding masonry is placed, and the corresponding decorative layer is fixed with three connectors;

[0026] S2. Use the longitudinal steel bars pre-buried in the lower beam to tie the stirrups to form a left column steel bar skeleton and a right column steel bar skeleton, and make the exposed part of the tie steel bars of the reinforced masonry body be located within the column steel bar skeleton, and pre-buried a first pipeline hole on the left column and a second pipeline hole on the right column, and the first pipeline hole and the second pipeline hole are respectively aligned with the second circular pipeline groove on the reinforced masonry body;

[0027] Tie up the upper side beam reinforcement frame, and pour concrete on the left column reinforcement frame, the right column reinforcement frame, and the upper side beam reinforcement frame to obtain an assembled wall;

[0028] S3. When assembling the wall, horizontal connection: a first recess is provided on the outer side of the left column, and a first protrusion is provided on the outer side of the right column. When horizontally connecting two prefabricated wall components, the first protrusion is engaged with the first recess; vertical connection: a second recess is provided at the bottom of the lower side beam, and a second protrusion is provided at the top of the upper side beam. When vertically connecting two prefabricated wall components, the second protrusion is engaged with the second recess to complete the on-site installation of the prefabricated wall components.

[0029] Specifically, the preparation method of the main building block, the secondary building block and the end building block is as follows:

[0030] Processing waste concrete to obtain recycled aggregate, then preparing recycled concrete, and making a block mold with a size of 390 mm×240 mm×190 mm, pouring the recycled concrete in the block mold to obtain a main block, a secondary block, and an end block, and finally filling the holes of the main block, the secondary block, and the end block with foam concrete insulation materials respectively;

[0031] The proportion of recycled concrete per cubic meter is: water 164~205kg / m 3 、Cement 410kg / m 3 , sand 321~384kg / m 3 , Crushed stone 300~511kg / m 3 , Recycled fine aggregate 161~214kg / m 3 , Recycled coarse aggregate 625~875kg / m 3 , ceramsite 75~128kg / m 3 .

[0032] Compared with the prior art, the present invention has at least the following beneficial effects:

[0033] The present invention discloses an assembled self-insulating recycled concrete block wall. A special connector is provided to connect a structural layer and a decorative layer, so that the assembly is convenient and the splicing efficiency can be greatly improved. A pipeline groove is reserved in the wall to realize the laying and installation of vertical pipelines, horizontal pipelines and switch boxes, so that the decoration personnel can arrange the power supply pipelines according to actual needs, increase the adaptability of the assembled wall, and improve the clearance height. At the same time, the built-in water and electricity pipeline method avoids the problems of damaging the original wall and fixing the position of the pipeline, and there is the possibility of later transformation. The structural layer is built by recycled concrete self-insulating blocks. The recycled coarse aggregate replacement rate of the blocks can reach up to 70%, and the recycled fine aggregate replacement rate can reach up to 40%, which greatly improves the recycling of waste concrete and has a high market value. In addition, ceramsite is also added to the recycled concrete, which can not only reduce the density of the blocks, but also have certain thermal insulation and sound insulation performance. Finally, a new type of assembled wall combined with pipeline laying and decoration optimization is obtained, which is far lower than the traditional assembled wall in terms of comprehensive cost, can save 20% of materials, and save 70% of working hours.

[0034] Furthermore, the structural layer of the prefabricated self-insulating recycled concrete wall component is composed of main building blocks, secondary building blocks and end building blocks. The three types of building blocks are all provided with reserved holes and pipeline grooves, which can be filled with insulation materials to improve the thermal insulation performance, and can also be combined with other building blocks to form vertical pipeline channels, horizontal pipeline channels and switch box grooves.

[0035] Furthermore, the structural layer of the prefabricated self-insulating recycled concrete wall components solves the decoration problems such as damage to the original wall and fixing the position of the pipelines by means of built-in water and electricity pipelines, thereby increasing the adaptability of the prefabricated wall and improving the indoor clearance height.

[0036] Furthermore, the external holes reserved on the decorative layer are arranged corresponding to the switch boxes, so as to avoid drilling holes when installing switches and sockets, thereby facilitating decoration construction.

[0037] Furthermore, the decorative layer is composed of a composite board, which is connected to the structural layer through connectors, thus realizing integrated prefabricated decoration, and is easy to assemble, which can greatly improve the splicing efficiency.

[0038] Furthermore, the structural layer is built with recycled concrete self-insulating blocks, and the blocks can be filled with insulation materials to improve their thermal insulation performance. At the same time, compared with other blocks, the present invention also has staggered air layers and pipes, which can isolate cold and hot bridges and achieve better sound insulation and thermal insulation effects.

[0039] Furthermore, the assembled self-insulating recycled concrete wall components are horizontally connected through the tongue and groove on the left column and the right column, and vertically connected through the tongue and groove on the upper beam and the lower beam. The connection is stable and easy to assemble and disassemble, which can improve construction efficiency and save work time.

[0040] Furthermore, by calculating, designing and reviewing the reinforcement of beams and columns of the beam-column system, the cross-sectional bearing capacity can meet the load-bearing requirements.

[0041] The invention provides a method for constructing an assembled self-insulating recycled concrete block wall. When preparing wall components, the structural layer, the decorative layer and the beam-column system can be carried out step by step, which greatly improves the construction efficiency. When connecting the wall components, the horizontal and vertical tongues and grooves on the wall components can be used to achieve quick connection, which optimizes the installation process and reduces the construction cost.

[0042] Furthermore, the main building blocks, secondary building blocks and end building blocks are all prepared with recycled concrete, and the formed hollow building blocks are filled with foam concrete insulation materials, which is not only conducive to the recycling and treatment of waste concrete, but also comprehensively considers the insulation performance of the composite insulation blocks, and has a good energy-saving and emission reduction effect.

[0043] In summary, the present invention has advantages in both material and structure: in terms of materials, thermal insulation materials such as recycled concrete, ceramsite and foam concrete are used, which not only improves the thermal insulation and sound insulation performance of wall components, but also saves energy and waste, and has broad market value; in terms of structure, the present invention is provided with embedded pipes, decorative layers, connectors, beam-column systems, etc., which can effectively improve construction efficiency, save materials and work hours, and is conducive to the optimization effect of later decoration.

[0044] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 A schematic diagram of a structural layer provided by an embodiment of the present invention;

[0046] Figure 2 A top view of a main building block provided by an embodiment of the present invention;

[0047] Figure 3 A side view of a main building block provided by an embodiment of the present invention;

[0048] Figure 4 A front view of a secondary building block provided by an embodiment of the present invention;

[0049] Figure 5 Side view of a secondary building block provided by an embodiment of the present invention

[0050] Figure 6 A top view of an end block provided by an embodiment of the present invention;

[0051] Figure 7 A schematic diagram of a decorative layer provided by an embodiment of the present invention;

[0052] Figure 8 A schematic diagram of a connecting member provided in an embodiment of the present invention;

[0053] Fig. 9 An elevation view of an assembled wall provided by an embodiment of the present invention;

[0054] Fig.10 A front view of a prefabricated wall provided by an embodiment of the present invention;

[0055] Fig.11 A schematic diagram of a second notch of a lower side beam provided in an embodiment of the present invention;

[0056] Fig.12 A schematic diagram of a second protrusion of a top rail provided in an embodiment of the present invention;

[0057] Fig.13 A schematic diagram of a first notch of a left column provided in an embodiment of the present invention;

[0058] Fig.14 A schematic diagram of the first protrusion of the right column provided in an embodiment of the present invention.

[0059] Among them: 1. Main building block; 11. Circular pipe; 12. First semicircular pipeline trough; 13. Second semicircular pipeline trough; 14. Hole; 15. Air layer; 2. Secondary building block; 21. Switch box slot; 3. End building block; 4. Decorative layer; 41. External hole; 5. Connector; 51. Steel sheet; 52. C-shaped fixing plate; 53. T-shaped fixing plate; 6. Lower side beam; 61. Second notch; 7. Left column; 71. First pipeline hole; 72. First notch; 8. Right column; 81. Second pipeline hole; 82. First protrusion; 9. Upper side beam; 91. Second protrusion. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "one side", "one end", "one side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0062] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0063] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] It should also be understood that the terms used in the present specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the present specification and the appended claims, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise.

[0065] It should be further understood that the term "and / or" used in the present description and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0066] Various structural schematic diagrams of the embodiments disclosed in the present invention are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0067] See also Figures 1 to 10 The present invention provides an assembled self-insulating recycled concrete block wall, including a beam-column system, a structural layer and a decorative layer 4; the decorative layer 4 is in contact with the inner side of the structural layer; the beam-column system is arranged above the structural layer.

[0068] In this embodiment, the structural layer includes multiple layers of masonry, which are stacked up and down in sequence with staggered joints. The multiple layers of masonry include several layers of walls built by main blocks 1, one layer of wall built by secondary blocks 2, and end blocks 3; the end blocks 3 are used to fill the gaps formed by the stacking of main blocks 1 and secondary blocks 2; multiple main blocks 1 are placed in parallel; when connecting the decorative layer 4 and the masonry structural layer, the connector 5 on the lower side of the decorative layer board 4 is placed first, then the decorative layer board 4 is placed, and finally the connector 5 on the upper side of the decorative layer board 4 is placed. The decorative layer board is six blocks high and four blocks wide.

[0069] See also Figure 2 to Figure 6 , a circular pipe 11 in the Z direction is arranged in the middle of the long side of the upper end face of the main building block 1, and a first semicircular pipeline groove 12 in the Z direction is arranged at the two ends of the short side of the upper end face of the main building block 1; a second semicircular pipeline groove 13 in the Y direction is arranged at the long side position of the upper end face of the main building block 1 and the long side position of the lower end face; a switch dark box groove 21 in the X direction is arranged on the two end sides of the main building block 1 to form a secondary building block 2; the main building block 1 is cut along the center line parallel to the short side of the upper end face to form an end building block 3; the first semicircular pipeline grooves 12 of the main building blocks 1 or the secondary building blocks 2 or the end building blocks 3 adjacent to each other on the left and right are combined to form a first circular pipeline groove, and the second semicircular pipeline grooves 13 of the main building blocks 1 or the secondary building blocks 2 or the end building blocks 3 adjacent to each other on the upper and lower sides are combined to form a second circular pipeline groove, and the first circular pipeline groove is connected to the circular pipe 11 on the main building blocks 1 or the secondary building blocks 2 adjacent to each other on the upper and lower sides; the switch dark box grooves 21 on the two adjacent secondary building blocks 2 on the left and right sides are combined to form a switch dark box; The switch box is connected to the first circular pipeline duct. The pipeline channel inside the structural layer can be formed by stacking the main building block 1, the secondary building block 2, and the end building block 3, which can be used to install cables or water pipes.

[0070] In this embodiment, the beam-column system includes an upper side beam 9, a lower side beam 6, a left column 7, and a right column 8; the left column 7 and the right column 8 are respectively arranged at both ends of the lower side beam 6; the structural layer is built on the lower side beam 6, and is located between the left column 7 and the right column 8; the upper side beam 9 is arranged on the top of the structural layer; the outer sides of the left column 7 and the right column 8 are respectively provided with a first recess 72 and a first protrusion 82; the top of the upper side beam 9 is provided with a second protrusion 91, and the bottom of the lower side beam 6 is provided with a second recess 61.

[0071] The reinforcement calculation method for the beam-column system is as follows:

[0072] 1) The steps for beam end section design are as follows:

[0073] Set the width b of the beam and the height H of the beam, the design value of the positive section bending moment M. c is the thickness of the protective layer, d g is the diameter of the beam stirrup, d z is the diameter of the longitudinal reinforcement of the beam, the effective height of the beam cross section is h0, then h0=Hcd g -0.5d s .

[0074] The height of the compression zone is calculated by formula (1):

[0075]

[0076] Among them, f cd is the axial compressive strength of concrete, and x is the height of the compression zone;

[0077] Determine whether formula (2) is valid:

[0078] x≤ξ b h0 (2)

[0079] Among them, ξ b is the height of the relative limit concrete compression zone;

[0080] If formula (2) holds true, the cross-sectional area of ​​the longitudinal reinforcement at the bottom of the beam can be obtained by formula (3):

[0081] f cd bx=f sd A s (3)

[0082] Among them, f sd is the design strength of the longitudinal reinforcement at the bottom of the beam, A s is the cross-sectional area of ​​the longitudinal reinforcement at the bottom of the beam;

[0083] The steel bars are selected and arranged according to the cross-sectional area of ​​the longitudinal reinforcement at the bottom of the beam. Then, the actual steel bar diameter and reinforcement area are used to determine whether the actual reinforcement ratio meets the conditional formula (4).

[0084]

[0085] Among them, f td is the axial tensile strength of concrete.

[0086] If the actual reinforcement ratio does not meet the conditional formula (4), the longitudinal tensile reinforcement shall be Configuration.

[0087] If formula (2) is not valid, use double-reinforced rectangular section for design.

[0088] Calculate A using formula (5), formula (6), and formula (7) s , A s ':

[0089] x=ξ b h0 (5)

[0090]

[0091] f cd bx+f sd A s '=f sd A s (7)

[0092] Among them, A s ' is the cross-sectional area of ​​the steel bar in the compression zone, a s ' is the distance from the combined force point of the steel bars in the compression zone to the compression edge of the section;

[0093] According to the obtained A s , A s 'Select the diameter and number of tensile and compressive steel bars respectively, and arrange the cross-sectional steel bars.

[0094] 2) The steps for column section design are as follows:

[0095] The cross-sectional area of ​​the column is set to A, the calculated length is set to l0, and the design value of the axial bearing capacity is set to N.

[0096] Calculate A by formula (8) s ':

[0097]

[0098] in, is the stability factor of the axially compressed member, which can be obtained by looking up the table based on the l0 value. cd is the axial compressive strength of concrete; f sd ' is the compressive strength of the longitudinal reinforcement; A s ' is the cross-sectional area of ​​all longitudinal reinforcements.

[0099] Finally, according to the obtained As ' and structural requirements to select and arrange steel bars.

[0100] See also Figure 7 An external hole 41 is provided on the decorative layer 4, and the external hole 41 is arranged corresponding to the switch box and is used for arranging a switch or a power socket.

[0101] See also Figure 8 The decorative layer 4 is installed on the structural layer through the connecting piece 5; the connecting piece 5 includes: a steel sheet 51, one end of the steel sheet 51 is connected to the back of the C-shaped fixing sheet 52, and the other end is connected to one side of the T-shaped fixing sheet 53; a threaded hole is provided on the T-shaped fixing sheet 53; the C-shaped fixing sheet 52 is installed in the circular pipe 11, and the back of the C-shaped fixing sheet 52 fits the circular pipe 11; the T-shaped fixing sheet 53 is fixed to the decorative layer 4 by bolts; the steel sheet 51 is installed between the two layers of masonry, and is stuck in the horizontal channel by stacking the upper and lower layers of blocks.

[0102] In this embodiment, two Z-direction holes 14 are opened in the middle of the main building block 1 for filling with insulation materials, thereby forming a recycled concrete composite self-insulating building block; the main building block 1 is provided with a staggered air layer 15 on one side of the long sides of the upper and lower end surfaces to improve its heat insulation and sound insulation performance.

[0103] In this embodiment, the main building block 1, the secondary building block 2, and the end building block 3 are all made of recycled concrete. The proportion of recycled concrete per cubic meter is: water 164-205 kg / m 3 , cement 410kg / m 3 、Sand 321~384kg / m 3 、 Crushed stone 300~511kg / m 3 , Recycled fine aggregate 161~214kg / m 3 , Recycled coarse aggregate 625~875kg / m 3 , ceramsite 75~128kg / m 3 The 28d compressive strength of the recycled concrete made with this ratio reaches 35.5MPa, which is much higher than that of recycled concrete with other ratios. In addition, due to the addition of ceramsite in the raw materials, the thermal insulation performance is improved.

[0104] In this embodiment, each component of the assembled wall can be prefabricated in a factory. When installing each component, the lowest layer of blocks is connected to the 6 lower side beams by mortar, and then two transverse tie bars are placed every three layers of blocks, and 18 layers are laid in sequence.

[0105] In this embodiment, the functions of the main building blocks 1 and the secondary building blocks 2 are: to participate in the masonry of the entire wall to form a structural layer; through the staggered masonry of different layers of building blocks, the first semicircular pipeline grooves 12 and holes 11 reserved on the building blocks can form a vertical channel for placing vertical pipelines; through the parallel stacking of building blocks of the same layer, the horizontal semicircular pipeline grooves 13 reserved on the building blocks can form a horizontal channel for placing horizontal pipelines; through the parallel stacking of switch box grooves 21 reserved on the secondary building blocks 2, sockets and switch slots can be formed, thus avoiding various problems caused by secondary construction during traditional decoration.

[0106] The present invention forms vertical pipeline troughs, horizontal pipeline troughs and switch cavities by designing a block structure, and connects the decorative layer through a connector, which not only reduces the deadweight of the assembled wall, but also realizes the internalization of pipelines, avoiding structural damage to the wall caused by secondary construction. The present invention shortens the construction period, saves costs, and retains the possibility of secondary transformation by means of internal water and electricity pipelines.

[0107] See also Figures 9 to 14 The present invention provides a construction method for an assembled self-insulating recycled concrete block wall, comprising the following steps:

[0108] S1, preparing recycled concrete self-insulating blocks, the self-insulating blocks comprising a main block 1, a secondary block 2, and an end block 3;

[0109] First, the waste concrete is processed to obtain the required recycled aggregate, and then the recycled concrete is prepared in the factory according to the following ratio: water 164~205kg / m 3 , cement 410kg / m 3 、Sand 321~384kg / m 3 , Crushed stone 300~511kg / m 3 , Recycled fine aggregate 161~214kg / m 3 , Recycled coarse aggregate 625~875kg / m 3 , ceramsite 75~128kg / m 3 The final recycled concrete has a 28d compressive strength of more than 30 MPa. A block mold with a size of 390 mm × 240 mm × 190 mm is made, and recycled concrete is poured to obtain the main block 1, the secondary block 2, and the end block 3. Finally, the reserved holes 14 of the three types of blocks are filled with foam concrete insulation materials. At the same time, the decorative layer board 4 and the connecting piece 5 need to be produced in advance.

[0110] A circular pipe 11 in the Z direction is arranged in the middle of the long side of the upper end surface of the main building block 1, and first semicircular pipeline grooves 12 in the Z direction are arranged at both ends of the short side of the upper end surface of the main building block 1; second semicircular pipeline grooves 13 in the Y direction are arranged at the long side of the upper end surface and the long side of the lower end surface of the main building block 1;

[0111] On both end sides of the main building block 1, switch cassette grooves 21 in the X direction are respectively provided to form a secondary building block 2;

[0112] The main block 1 is cut along a center line parallel to the short side of the upper end surface to form an end block 3;

[0113] The first semicircular pipeline troughs 12 of the main building blocks 1 or the secondary building blocks 2 or the end building blocks 3 adjacent to each other on the left and right are combined to form a first circular pipeline trough, and the second semicircular pipeline troughs 13 of the main building blocks 1 or the secondary building blocks 2 or the end building blocks 3 adjacent to each other on the upper and lower sides are combined to form a second circular pipeline trough, and the first circular pipeline trough is communicated with the circular pipes 11 on the main building blocks 1 or the secondary building blocks 2 adjacent to each other on the upper and lower sides; the switch dark box grooves 21 on the two secondary building blocks 2 adjacent to each other on the left and right sides are combined to form a switch dark box; the switch dark box is communicated with the first circular pipeline trough. By stacking the main building blocks 1, the secondary building blocks 2, and the end building blocks 3, a pipeline channel inside the structural layer can be formed, which can be used to install cables or water pipes.

[0114] S2, preparing reinforced masonry;

[0115] a. Prefabricate the lower side beam 6 in advance; the end of the lower side beam 6 is the beam-column connection node, at which the longitudinal reinforcement of the side column is embedded, and the upper end of the longitudinal reinforcement extends into the upper side beam 9.

[0116] b. Use the three types of blocks in step S1 to lay mortar on the lower side beam 6. During the laying process, put the C-shaped fixing piece 52 into the second semicircular pipeline groove and clamp it through the horizontal semicircular pipeline groove 13 of the upper and lower layer blocks, and expose the T-shaped fixing piece 53 outside the masonry, and then connect it with the decorative layer board 4.

[0117] c. When paving, the first circular pipeline trough is connected to the circular pipe 11 on the upper and lower adjacent main building blocks 1 or secondary building blocks 2, and the switch dark box grooves 21 on the two left and right adjacent secondary building blocks 2 are combined to form a switch dark box, so that the switch dark box is connected to the first circular pipeline trough;

[0118] After laying three layers of masonry, arrange the transverse tie bars of that layer on the transverse ribs of the third layer of masonry; the tie bars are arranged in double-reinforcement form, with a distance of 100mm between the two bars, 70mm from the outer edge of the block, 8mm in diameter, and 150mm in length of the exposed part.

[0119] d. Place a decorative layer 4 of the same size as each masonry that is six main blocks high and four main blocks wide, and fix the decorative layer 4 with three connectors 5; first connect the decorative layer board 4 to the connector 5 below, and then place the connector 5 above the decorative layer board 4 flush with the blocks.

[0120] e. According to the above steps, the masonry is laid layer by layer, and the final size of the masonry block is 1560mm×240mm×3420mm wall length×wall thickness×wall height.

[0121] S3, casting of prefabricated wall beam-column system;

[0122] a. Combined with the embedded longitudinal reinforcement on the lower side beam 6, the stirrups are tied to form the left column reinforcement skeleton and the right column reinforcement skeleton respectively, and the exposed parts of the tie bars of the reinforced masonry are located within the left column reinforcement skeleton and the right column reinforcement skeleton respectively. The first pipeline hole 71 is embedded in the left column 7, and the second pipeline hole 81 is embedded in the right column 8. The first pipeline hole 71 and the second pipeline hole 81 are aligned with the second circular pipeline groove on the reinforced masonry respectively.

[0123] b. Finally, the upper side beam 9 steel bar skeleton is obtained by tying. Formwork support is set outside the left column steel bar skeleton, the right column steel bar skeleton, and the upper side beam steel bar skeleton, and concrete is poured to obtain an assembled wall component.

[0124] Supplement: When selecting the steel bar model for the side column, the stirrups should be No. 6 steel bars, and the longitudinal bars should be determined according to the seismic fortification level. If the fortification level is below 7 degrees, the longitudinal bars should be No. 8 steel bars; if the fortification level is above 7 degrees, the longitudinal bars should be No. 12 steel bars. The present invention intends to use No. 8 steel bars as longitudinal bars.

[0125] S4. Lifting and connection of prefabricated wall components.

[0126] a. Transport the prefabricated wall components to the construction site for installation. During transportation, first place a U-shaped steel beam on top of the upper beam of the prefabricated wall, then use steel strapping to tie the prefabricated wall and the U-shaped steel beam as a whole, and finally lift the steel beam to achieve the hoisting of the prefabricated wall.

[0127] b. Horizontal connection: A first notch 72 is provided on the outside of the left column 7, and a second protrusion 82 is provided on the outside of the right column 8. When two assembled wall components are horizontally connected, the first protrusion 82 of the side column is engaged with the first notch 72.

[0128] c. Vertical connection: A second notch 61 is provided at the bottom of the lower side beam 6, and a second protrusion 92 is provided at the top of the upper side beam 9. When two assembled wall components are vertically connected, the second protrusion 92 of the side beam is engaged with the second notch 61.

[0129] In summary, the present invention provides an assembled self-insulating recycled concrete block wall and a construction method thereof. Starting from the structural design of the blocks and the optimization of materials, a block masonry structural layer integrating energy saving and waste utilization, thermal insulation and built-in pipelines is obtained. By arranging a decorative layer and a beam-column system on the outside of the structural layer, an assembled self-insulating recycled concrete block wall component is obtained. This component simultaneously solves the problems of the accumulation of waste concrete, the high energy consumption of traditional walls, the confusion of pipelines during decoration construction, and the secondary damage of the wall. It has a simple structure, a reasonable design, and good integrity, which improves the construction efficiency and the flexibility and safety of later decoration and renovation.

[0130] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. An assembled self-insulating recycled concrete block wall, characterized in that: It comprises a beam-column system, a structural layer and a decorative layer (4), wherein the decorative layer (4) is in contact with the inner side surface of the structural layer; the beam-column system is arranged above the structural layer; The structural layer is a multi-layer masonry structure, wherein the multi-layer masonry structures are stacked with staggered joints. The multi-layer masonry structure comprises a plurality of wall structures built by main masonry blocks (1), a wall structure built by secondary masonry blocks (2), and end masonry blocks (3); the end masonry blocks (3) are used to fill the gaps formed by the stacking of the main masonry blocks (1) and the secondary masonry blocks (2); The beam-column system comprises an upper beam (9), a lower beam (6), a left column (7), and a right column (8); a left column (7) and a right column (8) are respectively arranged at both ends of the lower beam (6); the structural layer is built on the lower beam (6) and is located between the left column (7) and the right column (8); an upper beam (9) is arranged on the top of the structural layer, and the reinforcement of the beam-column system comprises a beam end section and a column section; The cross section of the beam end is as follows: Determine the cross-sectional area of ​​the longitudinal reinforcement at the bottom of the beam according to the height of the compression zone, select and arrange the reinforcement according to the determined cross-sectional area of ​​the longitudinal reinforcement at the bottom of the beam, and use the actual reinforcement diameter and reinforcement area to determine whether the actual reinforcement ratio meets the following conditions: in, is the axial tensile strength of concrete; is the cross-sectional area of ​​the reinforcement, is the width of the beam, is the effective height of the section, is the section height, is the minimum reinforcement ratio of the longitudinal reinforcement at the bottom of the beam, Design strength of longitudinal reinforcement at the bottom of beam; If the actual reinforcement ratio does not meet the above conditions, the longitudinal tensile reinforcement shall be Configuration; if , is the height of the compression zone, The height of the relative limit concrete compression zone is a double-reinforced rectangular section. According to the obtained cross-sectional area of ​​the reinforcement and the cross-sectional area of ​​all longitudinal reinforcement Select the diameter and number of tensile and compressive steel bars respectively, and arrange the cross-sectional steel bars; The column cross-section is as follows: According to the cross-sectional area of ​​the column , calculate the length , design value of axial bearing capacity Calculate the cross-sectional area of ​​all longitudinal reinforcement , according to the obtained Select and arrange steel bars according to structural requirements.

2. The assembled self-insulating recycled concrete block wall according to claim 1 is characterized in that: A circular pipe (11) in the Z direction is arranged in the middle of the long side of the upper end face of the main building block (1), and first semicircular pipeline grooves (12) in the Z direction are arranged at both ends of the short side of the upper end face of the main building block (1); second semicircular pipeline grooves (13) in the Y direction are arranged at the long side of the upper end face and the long side of the lower end face of the main building block (1); switch box grooves (21) in the X direction are arranged on the side faces of both ends of the main building block (1) to form a secondary building block (2); and the main building block (1) is cut along a center line parallel to the short side of the upper end face to form an end building block (3).

3. The assembled self-insulating recycled concrete block wall according to claim 2 is characterized in that: The first semicircular pipeline troughs (12) of the main building blocks (1) or the secondary building blocks (2) or the end building blocks (3) adjacent to each other on the left and right are combined to form a first circular pipeline trough, and the second semicircular pipeline troughs (13) of the main building blocks (1) or the secondary building blocks (2) or the end building blocks (3) adjacent to each other on the upper and lower sides are combined to form a second circular pipeline trough, and the first circular pipeline trough is communicated with the circular pipe (11) on the main building blocks (1) or the secondary building blocks (2) adjacent to each other on the upper and lower sides; the switch dark box grooves (21) on the two secondary building blocks (2) adjacent to each other on the left and right sides are combined to form a switch dark box; and the switch dark box is communicated with the first circular pipeline trough.

4. The assembled self-insulating recycled concrete block wall according to claim 3 is characterized in that: An external hole (41) is provided on the decorative layer (4), and the external hole (41) is arranged corresponding to the switch dark box and is used for arranging a switch or a power socket.

5. The assembled self-insulating recycled concrete block wall according to claim 2 is characterized in that: The decorative layer (4) is installed on the structural layer via a connecting piece (5); the connecting piece (5) comprises a steel sheet (51), one end of the steel sheet (51) is connected to the back of a C-shaped fixing sheet (52), and the other end is connected to one surface of a T-shaped fixing sheet (53); a threaded hole is provided on the T-shaped fixing sheet (53); the C-shaped fixing sheet (52) is installed in the circular pipe (11), and the back of the C-shaped fixing sheet (52) is in contact with the circular pipe (11); the T-shaped fixing sheet (53) is fixed to the decorative layer (4) via bolts; and the steel sheet (51) is installed between two layers of masonry.

6. The assembled self-insulating recycled concrete block wall according to claim 1, characterized in that: The main building block (1) is provided with a staggered air layer (15) on one side of the long sides of the upper and lower end surfaces; and the middle of the main building block (1) is provided with two Z-direction holes (14) for filling with thermal insulation materials such as foam concrete.

7. The assembled self-insulating recycled concrete block wall according to claim 1, characterized in that: A first recess (72) and a first protrusion (82) are respectively provided on the outer sides of the left column (7) and the right column (8); a second protrusion (91) is provided on the top of the upper side beam (9), and a second recess (61) is provided on the bottom of the lower side beam (6).

8. The construction method of the assembled self-insulating recycled concrete block wall according to claim 1, characterized in that: The following steps are involved: S1. Pre-embed longitudinal reinforcement at the end of the lower side beam, and the upper end of the longitudinal reinforcement extends into the upper side beam; Main blocks, secondary blocks and end blocks are used for mortar masonry on the lower side beams. During masonry, C-shaped fixing pieces are placed in the second semicircular pipeline grooves provided at the long side positions of the upper end faces of the main blocks and the long side positions of the lower end faces, and the T-shaped fixing pieces are exposed outside the masonry; the first semicircular pipeline grooves provided at the two ends of the short side of the upper end faces of the main blocks are connected to the circular pipes on the upper and lower adjacent main blocks or secondary blocks, and the switch dark box grooves on the two adjacent secondary blocks on the left and right are combined to form a switch dark box, so that the switch dark box is connected to the first circular pipeline groove; after paving three layers of masonry, the corresponding layer of transverse tie steel bars are arranged on the transverse ribs of the third layer of masonry; after laying a masonry with a height of six main blocks and a width of four main blocks, a decorative layer of the same size as the corresponding masonry is placed, and the corresponding decorative layer is fixed with three connectors; S2. Use the longitudinal steel bars pre-buried in the lower beam to tie the stirrups to form a left column steel bar skeleton and a right column steel bar skeleton, and make the exposed part of the tie steel bars of the reinforced masonry body be located within the column steel bar skeleton, and pre-buried a first pipeline hole on the left column and a second pipeline hole on the right column, and the first pipeline hole and the second pipeline hole are respectively aligned with the second circular pipeline groove on the reinforced masonry body; Tie up the upper side beam reinforcement frame, and pour concrete on the left column reinforcement frame, the right column reinforcement frame, and the upper side beam reinforcement frame to obtain an assembled wall; S3. When assembling the wall, horizontal connection: a first recess is provided on the outer side of the left column, and a first protrusion is provided on the outer side of the right column. When horizontally connecting two prefabricated wall components, the first protrusion is engaged with the first recess; vertical connection: a second recess is provided at the bottom of the lower side beam, and a second protrusion is provided at the top of the upper side beam. When vertically connecting two prefabricated wall components, the second protrusion is engaged with the second recess to complete the on-site installation of the prefabricated wall components.

9. The method according to claim 8, characterized in that The preparation method of the main building block, the secondary building block and the end building block is as follows: Firstly, waste concrete is processed to obtain recycled aggregate, which is then prepared into recycled concrete, and a block mold with a size of 390 mm × 240 mm × 190 mm is made, and the recycled concrete is poured in the block mold to obtain a main block, a secondary block, and an end block, and finally, the holes of the main block, the secondary block, and the end block are filled with foam concrete insulation materials respectively.

10. The method according to claim 8, characterized in that The proportion of recycled concrete per cubic meter is: water 164~205kg / m 3 、Cement 410kg / m 3 、Sand 321~384kg / m 3 , Crushed stone 300~511kg / m 3 , Recycled fine aggregate 161~214kg / m 3 , Recycled coarse aggregate 625~875kg / m 3 , ceramsite 75~128kg / m 3 .

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