UHPC prefabricated pitched roof manufacturing method and UHPC prefabricated pitched roof

Abstract

The invention discloses a UHPC prefabricated pitched roof manufacturing method and a UHPC prefabricated pitched roof. The UHPC prefabricated pitched roof manufacturing method comprises the steps that S1, a wall body of a pitched roof is poured; and S2, the wall body and the slope roof panel are combined and poured. The step S1 comprises the following steps: S12, mounting and fixing the reinforcing steel bars and the reinforcing steel bar sleeves in a mold; s14, a UHPC material is poured into the wall body; s15, the wall body is maintained after being poured; the step S2 comprises the steps that S21, after the wall to be poured meets the strength requirement, demolding is conducted, the boundary dimension of the wall is rechecked and adjusted, and fixing is conducted after adjustment; s22, the hardened wall surface is subjected to roughening treatment, a cement film, loose stones and a soft concrete layer are removed, and the wall surface is fully wetted and washed clean; s25, pouring a UHPC material on the slope roof panel; and S26, after pouring, temporary reinforcing parts are adopted for fixing, and curing and forming are conducted. The pitched roof is made of UHPC materials, the weight of the structure is reduced, and the use reliability of the structure is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of construction, and in particular relates to a UHPC prefabricated sloping roof manufacturing method and the UHPC prefabricated sloping roof. Background Art

[0002] In recent years, driven by the market and relevant policies, green prefabricated buildings have developed rapidly, and various prefabricated building products have been continuously optimized. Among them, prefabricated components are also developing in the direction of lightweight and simplicity.

[0003] In the construction process of some MIC modular buildings, the whole building is designed in a standard modular manner according to units with different functions. The roof panels are often prefabricated in the factory as a single component, and they are not formed together with the walls and then transported to the site for installation. Conventional prefabricated concrete roof panels have disadvantages such as heavy weight and inconvenient hoisting. In addition, because the previous prefabricated roof panels were made of conventional concrete, they are heavy and not tensile-resistant, which makes the roof panels easy to crack during hoisting and transportation.

[0004] At present, there is a lack of a UHPC prefabricated pitched roof manufacturing method to use new UHPC materials to make prefabricated pitched roofs to reduce the weight of the structure and improve the reliability of the structure. At present, there is also a lack of a new type of UHPC prefabricated pitched roof to reduce the risk of cracking of the prefabricated pitched roof and ensure the safety of the structure. Among them, UHPC is also known as ultra-high performance concrete.

[0005] Therefore, a new technology is needed to solve the problem that there is a lack of a UHPC prefabricated slope roof manufacturing method in the prior art; a new technology is needed to solve the problem that there is a lack of a UHPC prefabricated slope roof in the prior art. Summary of the invention

[0006] In order to solve the above problems in the prior art, the present invention provides a UHPC prefabricated sloping roof manufacturing method, which utilizes a new type of UHPC material to manufacture the prefabricated sloping roof, reduces the weight of the structure, improves the reliability of the structure, and facilitates lifting, transportation and installation.

[0007] The present invention adopts the following technical solutions:

[0008] A method for manufacturing a UHPC prefabricated slope roof comprises the following steps:

[0009] S1. Casting the wall of the sloping roof;

[0010] S11, support the formwork and arrange the embedded parts of the hanging points;

[0011] S12, the steel bars and steel sleeves are installed and fixed into the mold; wherein the steel sleeves are used for grouting connection between the slope roof and the lower main structure;

[0012] S13. Conduct quality inspection of concealed works on the wall;

[0013] S14, wall casting UHPC material;

[0014] S15. Curing after wall pouring;

[0015] S2, assembling and pouring the wall and the pitched roof panel;

[0016] S21. After the wall to be poured meets the strength requirements, demoulding is carried out, and the outer dimensions of the wall are checked and adjusted, and fixed after adjustment;

[0017] S22. Roughen the hardened wall surface, remove cement film, loose stones and weak concrete layer, and fully moisten and rinse;

[0018] S23, installing the formwork, tying the steel bars and connecting the pipelines on the formwork platform;

[0019] S24. Conduct quality inspection of concealed works of slope roof panels;

[0020] S25, pouring UHPC material for slope roof panels;

[0021] S26. After pouring, use temporary reinforcements to fix and maintain the structure.

[0022] Furthermore, before the step S1, a step S0 is also included; the step S0 is pre-construction preparation, which includes the following steps:

[0023] S01. Calculate the centroid of the sloped roof according to its shape and size to determine the layout of the embedded parts of the hanging points;

[0024] S02. Measure, lay out and position the mold. The surface of the mold used for casting should be smooth.

[0025] Furthermore, the step S01 further includes the following steps:

[0026] B1. Divide the slope roof into three parts, namely a first wall with a rectangular cross-section, a second wall with a rectangular cross-section, and a slope roof panel with a parallelogram cross-section;

[0027] B2. The corner point of the first wall of the rectangular cross section is taken as the origin of the XOY plane coordinate, the horizontal side of the first wall of the rectangular cross section is taken as the X-axis direction, and the vertical side of the first wall of the rectangular cross section is taken as the Y-axis direction;

[0028] B3. Calculate the centroid coordinates of the slope roof according to the centroid coordinate formula;

[0029] The centroid coordinate formula includes the following formula:

[0030]

[0031] Among them, x c is the abscissa of the centroid of the sloping roof; c is the centroid ordinate of the sloping roof; A is the cross-sectional area of ​​the sloping roof; “(ΔA i )·x i " is the product of the cross-sectional area of ​​each part and the abscissa of its own centroid; "(ΔA i )·y i ” is the product of the cross-sectional area of ​​each part and the ordinate of its own centroid; Σ is the summation symbol;

[0032] According to formula ①, formula ② and the dimensional data of the three parts of the sloping roof, the centroid coordinates of the sloping roof are calculated to determine the layout positions of the embedded parts of the hanging points.

[0033] Furthermore, the step S2 further includes a step S3; the step S3 is to install the auxiliary structure, which includes the following steps:

[0034] S31. Install auxiliary structures by reserving interfaces on both sides of the sloping roof.

[0035] Furthermore, the step S3 further includes a step S4; the step S4 is: installing the entire sloping roof onto the lower main structure.

[0036] Furthermore, the S4 step includes the following steps:

[0037] S41. Before the slope roof is hoisted, a weather-resistant acrylic waterproof coating with a thickness of 2.0 mm shall be applied to the joints under the wall of the slope roof for connection;

[0038] S42. After the hoisting is completed, fill and spray waterproof concrete at the outer joint position;

[0039] S43. After verification that the requirements are met, the wall is connected to the lower main structure through the steel sleeve with reinforcement grouting.

[0040] Furthermore, in the step S43, the grouting uses a rigid-elastic nano-powder coordinated reinforced and toughened grouting material, and the rigid-elastic nano-powder coordinated reinforced and toughened grouting material is a mixture of multiple materials selected from "cementitious material, quartz sand, light calcium carbonate, nano calcium carbonate, nano powder rubber, and additives".

[0041] Another object of the present invention is to provide a UHPC prefabricated sloping roof, which is cast using UHPC materials and has excellent mechanical properties, can reduce the risk of cracking of the prefabricated sloping roof, and can ensure the safety of structural use.

[0042] A UHPC prefabricated slope roof comprises a first wall, a second wall and a slope roof panel, wherein the first wall and the second wall are both pre-buried with a steel sleeve, the steel sleeve has a grouting port and a grouting outlet, and the grouting outlet is located above the grouting port; one side of the slope roof panel is connected to the first wall, and the other side is connected to the second wall; the first wall, the slope roof panel and the second wall are all cast by UHPC materials; after the first wall, the slope roof panel and the second wall are connected, the slope of the slope roof panel is a flat slope or an inclined slope.

[0043] Furthermore, the first wall and the second wall are both provided with joint positions for connection.

[0044] Furthermore, the cross section formed by the first wall, the sloping roof panel and the second wall is provided with one or both of shutters and glass.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] The UHPC prefabricated sloping roof manufacturing method of the present invention innovatively uses the new material UHPC to manufacture the sloping roof, so that the structural thickness of the sloping roof can be thinned, thereby reducing the weight of the entire sloping roof, reducing the difficulty of lifting, reducing the occurrence of safety accidents at the lifting operation site, and reducing the risk of cracking of the prefabricated sloping roof.

[0047] At the same time, the present invention innovatively designs a process of "prefabricating the wall first, curing the wall, and then casting it together with the slope roof panel", which greatly reduces the error of directly casting the slope roof as a whole, improves the construction quality of the slope roof, and effectively prevents the slope roof from cracking locally. The new production method of the present invention effectively improves the stability of the slope roof panel, wherein the slope roof panel is made into a slope roof together with the wall, effectively avoiding the problem of poor stability and easy cracking faced by the roof panel as a single component hoisted in the past.

[0048] At the same time, the present invention can make the slope roof more coordinated as a whole during the hoisting process by reasonably setting the positions of the embedded parts of the hanging points, and effectively avoid the situation that the slope roof is easy to crack during the hoisting process.

[0049] At the same time, the present invention embeds steel sleeves during prefabricating the wall, which are used for the later insertion and grouting connection between the slope roof and the lower main structure, thereby ensuring the convenience of prefabricated structure installation and the integrity and safety of the structural connection.

[0050] The UHPC prefabricated sloping roof of the present invention is cast by using UHPC materials, has excellent mechanical properties, can reduce the risk of cracking of the prefabricated sloping roof, and can ensure the safety of the structure in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The technology of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0052] Figure 1 A schematic cross-sectional view of the UHPC prefabricated pitched roof of the present invention;

[0053] Figure 2 yes Figure 1 A partial enlarged view at C;

[0054] Figure 3 yes Figure 1 The elevation view from the perspective of point D;

[0055] Figure 4 yes Figure 1 Schematic diagram with shutters installed;

[0056] Figure 5 It is a schematic diagram of plane coordinates for calculating the centroid coordinates of the UHPC prefabricated slope roof according to the present invention;

[0057] Figure 6 It is a schematic diagram (partial schematic diagram) of the installation of the UHPC prefabricated pitched roof of the present invention onto the lower main structure.

[0058] Reference numerals:

[0059] 1-sloped roof; 11-weather-resistant acrylic waterproof coating; D-viewing direction; E-rebar grouting connection; 12-louver; F-one side direction; G-the other side direction;

[0060] 2- wall; 21- first wall; T1- thickness; 22- second wall; T2- thickness; 23- joint position; 231- outer position; 232- inner position; C- partial enlargement figure number;

[0061] 3-slope roof panel; H-one side direction; K-the other side direction; T3-thickness;

[0062] 4-Embedded parts for hanging points;

[0063] 5-rebar sleeve; 51-main passage; 52-grouting port; 53-slurry outlet;

[0064] 6-Lower main structure;

[0065] The X-axis of the X-XOY plane coordinates; the origin of the O-XOY plane coordinates; the Y-axis of the Y-XOY plane coordinates;

[0066] x1-the abscissa of the centroid of the first wall; y1-the ordinate of the centroid of the first wall;

[0067] x2-the abscissa of the centroid of the pitch roof panel; y2-the ordinate of the centroid of the pitch roof panel;

[0068] x3-the abscissa of the centroid of the second wall; y3-the ordinate of the centroid of the second wall;

[0069] a-horizontal side length; h1-vertical side height; h2-vertical side height; c-spacing; b-short side length. DETAILED DESCRIPTION

[0070] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0071] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the drawings.

[0072] Reference Figures 1 to 4 A method for manufacturing a UHPC prefabricated pitched roof comprises the following steps:

[0073] S1, pouring the wall 2 of the sloping roof 1;

[0074] S11, supporting the formwork and arranging the hanging point embedded parts 4;

[0075] S12, the steel bars and steel sleeves 5 are installed and fixed into the mold; wherein the steel sleeves 5 are used for grouting connection between the slope roof 1 and the lower main structure 6;

[0076] S13, perform a quality inspection on the concealed works of the wall 2, and ensure that there is no debris, no sewage, and no wasted oil in the mold;

[0077] S14, wall 2 is cast with UHPC material; UHPC is the full name of "Ultra-High Performance Concrete" in English;

[0078] S15, wall 2 is poured and maintained;

[0079] S2, combining and pouring the wall 2 and the sloped roof panel 3;

[0080] S21, after the wall 2 to be poured meets the strength requirements, demoulding is performed, and the outer dimensions of the wall 2 are checked and adjusted, and fixed after adjustment;

[0081] S22. Roughen the surface of the hardened wall 2, remove the cement film, loose stones and weak concrete layer, and fully moisten and rinse it to prevent water accumulation;

[0082] S23, install the formwork, tie the steel bars and connect the pipelines on the formwork platform (Note: the formwork is a part of the mold);

[0083] S24, conducting a hidden engineering quality inspection of the slope roof panel 3;

[0084] S25, pouring UHPC material on the slope roof panel 3; preferably, before pouring the UHPC material on the slope roof panel 3, a 30 mm thick layer of cement is first laid, and the composition of the cement is the same as that of the UHPC material;

[0085] S26. After pouring, temporary reinforcements are used to fix and maintain the structure. Preferably, the temporary reinforcements are steel trusses.

[0086] The manufacturing method of the present invention innovatively manufactures the wall 2 and the slope roof panel 3 together to form a prefabricated slope roof 1, thereby improving the stability of the slope roof panel 3 during the hoisting process, and effectively avoiding the easy cracking problem faced by the slope roof panel 3 as a single component during hoisting. At the same time, the present invention innovatively uses a new type of UHPC material to manufacture the prefabricated slope roof 1, thereby improving the mechanical properties of the prefabricated slope roof 1, reducing the overall weight of the prefabricated slope roof 1, reducing the difficulty of hoisting, and effectively avoiding the easy cracking problem of the prefabricated slope roof 1 during the hoisting process.

[0087] The manufacturing method of the present invention is to "prefabricate the wall 2 first, and after curing the wall 2, cast it together with the sloping roof panel 3", rather than directly casting both the wall 2 and the sloping roof panel 3. The manufacturing method of the present invention greatly reduces the error of directly casting the sloping roof 1 as a whole, improves the construction quality of the sloping roof 1, and effectively prevents local cracking of the sloping roof 1 (Note: "the wall 2 and the sloping roof panel 3" are directly cast, which is more susceptible to thermal expansion and contraction and causes local cracking).

[0088] In one embodiment, before the step S1, a step S0 is also included; the step S0 is pre-construction preparation, which includes the following steps:

[0089] S01. Calculate the centroid of the sloping roof 1 according to the shape and size of the sloping roof 1 to determine the layout position of the hanging point embedded parts 4;

[0090] S02. Measure, lay out and position the mold in the factory. The surface of the mold used for casting should be smooth, without scratches, rust, oxide layer shedding, etc. Any loose rust in the mold should be wiped off.

[0091] Reference Figure 5 In one embodiment, the step S01 further includes the following steps:

[0092] B1. The slope roof 1 is (approximately) divided into three parts, namely a first wall 21 with a rectangular cross-section, a second wall 22 with a rectangular cross-section, and a slope roof panel 3 with a parallelogram cross-section (other irregular shapes of the slope roof 1 are negligible, and the negligible size is a small amount that can be omitted and will not have a significant impact on the determination of the centroid coordinates of the present invention);

[0093] B2. The corner point of the first wall 21 with a rectangular cross section is taken as the origin O of the XOY plane coordinate, the horizontal side of the first wall 21 with a rectangular cross section is taken as the X-axis direction, and the vertical side of the first wall 21 with a rectangular cross section is taken as the Y-axis direction;

[0094] B3. Calculate the centroid coordinates of the slope roof 1 according to the centroid coordinate formula;

[0095] The centroid coordinate formula includes the following formula:

[0096]

[0097] Among them, x c is the abscissa of the centroid of the sloping roof; c is the centroid ordinate of the sloping roof; A is the cross-sectional area of ​​the sloping roof; “(ΔA i )·x i " is the product of the cross-sectional area of ​​each part and the abscissa of its own centroid; "(ΔA i )·y i ” is the product of the cross-sectional area of ​​each part and the ordinate of its own centroid; Σ is the summation symbol;

[0098] According to formula ①, formula ② and the dimensional data of the three parts of the slope roof, the centroid coordinates of the slope roof 1 are calculated to determine the layout position of the hanging point embedded parts 4. This process can make the hanging point embedded parts 4 on the slope roof 1 be arranged reasonably, which is conducive to avoiding cracking caused by unbalanced force on the slope roof 1 during the hoisting process.

[0099] Reference Figure 5 Preferably, the horizontal length of the first wall 21 with a rectangular cross section is set to a, and the vertical height is set to h1; the horizontal length of the second wall 22 with a rectangular cross section is set to a, and the vertical height is set to h2; the spacing between the first wall 21 with a rectangular cross section and the second wall 22 with a rectangular cross section is set to c; the short side length of the sloped roof panel 3 with a parallelogram cross section is set to b;

[0100] Then for the first wall 21 with a rectangular cross section: ΔA1=ah1;

[0101] For the parallelogram cross-section pitched roof panel 3: ΔA2 = bc;

[0102] For the second wall 22 with a rectangular cross section: ΔA3=ah2;

[0103] According to formula ①, the centroid abscissa of the slope roof 1 is calculated:

[0104]

[0105] According to formula ②, the centroid ordinate of the slope roof 1 is calculated:

[0106]

[0107] Preferably, the position of the hanging point embedded parts 4 is arranged according to the coincidence degree between the center of gravity of the sloping roof 1 and the center of gravity of the lifting equipment, the stress state of the sloping roof 1, and the overturning requirement of the sloping roof 1 involved in the transportation and lifting process.

[0108] Reference Figures 1 to 4 In one embodiment, the step S2 further includes a step S3; the step S3 is to install the auxiliary structure, which includes the following steps:

[0109] S31, by reserving interfaces on both sides of the slope roof 1 (combined Figure 3 One side direction F and the other side direction G, understanding the two sides of the sloping roof 1), are used to install shutters 12, glass and other auxiliary structures.

[0110] Reference Figure 6 In one embodiment, step S3 further includes step S4; step S4 is: installing the entire sloping roof 1 onto the lower main structure 6.

[0111] Reference Figure 6 In one embodiment, the step S4 comprises the following steps:

[0112] S41, before the sloping roof 1 is hoisted, a weather-resistant acrylic waterproof coating 11 with a thickness of 2.0 mm is applied to the joint position 23 for connection under the wall 2 of the sloping roof 1;

[0113] S42, after the hoisting is completed (i.e., after the entire slope roof 1 is hoisted and connected to the lower main structure 6), spray waterproof concrete at the outer joint position;

[0114] S43, after the verification meets the requirements, the wall 2 is connected to the lower main structure 6 by the reinforcement sleeve 5 and the reinforcement grouting (combined with Figure 6 to understand the E in the text).

[0115] In one embodiment, in the step S43, the grouting uses a rigid elastic nano powder coordinated reinforced toughening grouting material, and the rigid elastic nano powder coordinated reinforced toughening grouting material is a mixture of multiple materials selected from "cementitious material, quartz sand, light calcium carbonate, nano calcium carbonate, nano powder rubber, and additives". Preferably, the cementitious material (such as silicate cement) is 70.5 to 88.5 parts, the quartz sand is 55 to 74 parts, the light calcium carbonate is 0.08 to 0.12 parts, the nano calcium carbonate is 0.06 to 0.12 parts, the nano powder rubber is 0.05 to 0.1 parts, and the additive is 0.4 to 0.9 parts. The rigid elastic nano powder coordinated reinforced toughening grouting material independently developed by the present invention changes the interface structure of the grouting material and the basic structure after hardening, has excellent construction performance, compression resistance, crack resistance and corrosion resistance, and can adapt to more severe environments and complex working conditions.

[0116] Another object of the present invention is to provide a UHPC prefabricated sloping roof, which is cast using UHPC materials and has excellent mechanical properties, can reduce the risk of cracking of the prefabricated sloping roof, and can ensure the safety of structural use.

[0117] Reference Figures 1 to 4 A UHPC prefabricated sloping roof 1 is manufactured by the above “a method for manufacturing a UHPC prefabricated sloping roof”. The UHPC prefabricated sloping roof 1 comprises a first wall 21, a second wall 22 and a sloping roof panel 3. The first wall 21 and the second wall 22 are both pre-buried with a steel sleeve 5. The steel sleeve 5 has a grouting port 52 and a grouting outlet 53. The grouting outlet 53 is located above the grouting port 52. The sloping roof panel 3 is connected to the first wall 21 on one side and to the second wall 22 on the other side (combined with Figure 1 The first wall 21, the sloped roof panel 3 and the second wall 22 are all cast with UHPC materials; after the first wall 21, the sloped roof panel 3 and the second wall 22 are connected, the slope of the sloped roof panel 3 is a flat slope or a slope. Preferably, the slope of the sloped roof panel 3 in this embodiment is a slope.

[0118] In one embodiment, the steel bar sleeve 5 is a straight thread steel bar sleeve.

[0119] Preferably, the main passage 51 of the steel sleeve 5 is vertically penetrated through the first wall 21, and the grouting port 52 and the slurry outlet 53 are transversely perpendicular to the main passage 51 and communicated with the main passage 51; the main passage 51 of the steel sleeve 5 is vertically penetrated through the second wall 22, and the grouting port 52 and the slurry outlet 53 are transversely perpendicular to the main passage 51 and communicated with the main passage 51.

[0120] Reference Figure 1 and Figure 2 In one embodiment, the first wall 21 and the second wall 22 are provided with joint positions 23 for connection. Preferably, the cross-sectional shape of the joint position 23 is "Z" shaped, with the outer position 231 being low and the inner position 232 being high, and the outer position 231 being 20mm to 30mm lower than the inner position 232. In this embodiment, the outer position 231 is 20mm lower than the inner position 232. This design of the present invention is conducive to strengthening the connection coupling effect between the sloping roof 1 and the lower main structure 6 when the wall 2 is connected to the lower main structure 6, and is conducive to ensuring the stability of the connection. At the same time, this design of the present invention can play an excellent waterproof effect, effectively preventing the outer water from leaking into the interior of the building from the joint.

[0121] Reference Figures 1 to 4 In one embodiment, the thickness T1 of the first wall 21, the thickness T3 of the sloping roof panel 3, and the thickness T2 of the second wall 22 are all 40mm-60mm; in this embodiment, the thickness T1 of the first wall 21, the thickness T3 of the sloping roof panel 3, and the thickness T2 of the second wall 22 are all 50mm. In the past, the wall and roof panels made of conventional concrete had a structural thickness of 100mm-150mm; the sloping roof 1 of the present invention is made of a new UHPC material and a new manufacturing method, and the thickness of the sloping roof 1 is reduced from the original "100mm-150mm" to "40mm-60mm", and the structural thickness is greatly reduced, which reduces the overall weight of the sloping roof 1, reduces the difficulty of hoisting, reduces the occurrence of safety accidents at the hoisting operation site, and reduces the risk of cracking during the hoisting process of the prefabricated sloping roof 1.

[0122] Reference Figure 1 In one embodiment, a plurality of hanging point embedded parts 4 are provided at a cross section of the first wall 21, and a plurality of hanging point embedded parts 4 are provided at a cross section of the second wall 22.

[0123] Reference Figure 1 and Figure 4 In one embodiment, the cross section formed by the first wall 21, the sloping roof panel 3 and the second wall 22 is provided with one or both of shutters 12 and glass.

[0124] The UHPC prefabricated sloping roof 1 of the present invention has a light structure weight, is convenient for hoisting and transportation, improves construction efficiency, reduces construction costs, and effectively avoids the cracking problem of the sloping roof 1 during hoisting. At the same time, after the UHPC prefabricated sloping roof 1 of the present invention is assembled with the lower main structure 6, the waterproof effect at the joint position 23 is excellent, which effectively prevents external water from penetrating into the interior of the building from the joint.

[0125] The UHPC prefabricated sloping roof 1 of the present invention improves the reliability of the sloping roof 1 and better meets the usage requirements of people.

[0126] The UHPC prefabricated sloping roof manufacturing method and other contents of the UHPC prefabricated sloping roof described in the present invention refer to the prior art and will not be described in detail here.

[0127] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A method for manufacturing a UHPC prefabricated slope roof, characterized in that: The following steps are involved: S1. Casting the wall of the sloping roof; S11, support the formwork and arrange the embedded parts of the hanging points; S12, the steel bars and steel sleeves are installed and fixed into the mold; wherein the steel sleeves are used for grouting connection between the slope roof and the lower main structure; S13. Conduct quality inspection of concealed works on the wall; S14, wall casting UHPC material; S15. Maintain the wall after pouring; S2, assembling and pouring the wall and the pitched roof panel; S21. After the wall to be poured meets the strength requirements, demoulding is carried out, and the outer dimensions of the wall are checked and adjusted, and fixed after adjustment; S22. Roughen the hardened wall surface, remove cement film, loose stones and weak concrete layer, and fully moisten and rinse; S23, installing the formwork, tying the steel bars and connecting the pipelines on the formwork platform; S24. Conduct quality inspection of concealed works of slope roof panels; S25, pouring UHPC material for slope roof panels; S26. After pouring, use temporary reinforcements to fix and maintain the structure.

2. The method for making a UHPC prefabricated slope roof according to claim 1, characterized in that: Before the step S1, the method further includes a step S0; The S0 step is preparation before construction, which includes the following steps: S01. Calculate the centroid of the sloped roof according to its shape and size to determine the layout of the embedded parts of the hanging points; S02. Measure, lay out and position the mold. The surface of the mold used for casting should be smooth.

3. The method for making a UHPC prefabricated slope roof according to claim 2, characterized in that: The step S01 further includes the following steps: B1. Divide the slope roof into three parts, namely a first wall with a rectangular cross-section, a second wall with a rectangular cross-section, and a slope roof panel with a parallelogram cross-section; B2. The corner point of the first wall of the rectangular cross section is taken as the origin of the XOY plane coordinate, the horizontal side of the first wall of the rectangular cross section is taken as the X-axis direction, and the vertical side of the first wall of the rectangular cross section is taken as the Y-axis direction; B3. Calculate the centroid coordinates of the slope roof according to the centroid coordinate formula; The centroid coordinate formula includes the following formula: Among them, x c is the abscissa of the centroid of the sloping roof; c is the centroid ordinate of the slope roof; A is the cross-sectional area of ​​the slope roof; "(ΔA i )·x i " is the product of the cross-sectional area of ​​each part and the abscissa of its own centroid; "(ΔA i )·y i ” is the product of the cross-sectional area of ​​each part and the ordinate of its own centroid; Σ is the summation symbol; According to formula ①, formula ② and the dimensional data of the three parts of the sloping roof, the centroid coordinates of the sloping roof are calculated to determine the layout positions of the embedded parts of the hanging points.

4. The method for making a UHPC prefabricated slope roof according to claim 1, characterized in that: The step S2 further includes a step S3; the step S3 is to install the auxiliary structure, which includes the following steps: S31. Install auxiliary structures by reserving interfaces on both sides of the sloping roof.

5. The method for making a UHPC prefabricated slope roof according to claim 4, characterized in that: The step S3 also includes a step S4; the step S4 is: installing the entire sloping roof onto the lower main structure.

6. The method for making a UHPC prefabricated slope roof according to claim 5, characterized in that: The S4 step includes the following steps: S41. Before the slope roof is hoisted, a weather-resistant acrylic waterproof coating with a thickness of 2.0 mm shall be applied to the joints under the wall of the slope roof for connection; S42. After the hoisting is completed, fill and spray waterproof concrete at the outer joint position; S43. After verification that the requirements are met, the wall is connected to the lower main structure through the steel sleeve with reinforcement grouting.

7. The method for making a UHPC prefabricated slope roof according to claim 6, characterized in that: In the step S43, the grouting adopts a rigid elastic nano powder coordinated reinforced toughening grouting material, and the rigid elastic nano powder coordinated reinforced toughening grouting material is mixed with multiple materials of "cementitious material, quartz sand, light calcium carbonate, nano calcium carbonate, nano powder rubber, and additives".

8. A UHPC prefabricated pitched roof, characterized in that: The invention comprises a first wall, a second wall and a slope roof panel, wherein the first wall and the second wall are both pre-embedded with a steel sleeve, the steel sleeve has a grouting port and a grouting outlet, and the grouting outlet is located above the grouting port; one side of the slope roof panel is connected to the first wall, and the other side is connected to the second wall; the first wall, the slope roof panel and the second wall are all cast by UHPC material; after the first wall, the slope roof panel and the second wall are connected, the slope of the slope roof panel is a flat slope or an inclined slope.

9. The UHPC prefabricated pitched roof according to claim 8, characterized in that: The first wall and the second wall are both provided with joint positions for connection.

10. The UHPC prefabricated pitched roof according to claim 8, characterized in that: The cross section formed by the first wall, the sloping roof panel and the second wall is provided with one or both of shutters and glass.

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