CN117166757A - Accurate positioning method for large-gradient inclined roof template - Google Patents

Abstract

The invention belongs to the technical field of building construction, and particularly discloses a precise positioning method of a large-gradient inclined roof template, which comprises the following steps: positioning and lofting a plane, and marking a control line on a bottom layer structure plate; setting an upright rod by calculating elevation, and connecting the tops of the upright rods through steel wires; setting up a scaffold at the bottom of the steel wire, and sequentially setting main and secondary keels at the top of the scaffold; setting a template. Before the template is installed, the position of a control line is determined by lofting a roof projection plane of a building design drawing on a bottom structural plate, then the elevation of the bottom structural plate at two end points of the turning line is calculated according to the building drawing, vertical rods are arranged, the tops of the corresponding vertical rods are connected through steel wires, the position of the turning template is determined according to the steel wires, the roof template is accurately positioned, the flatness of the roof template is ensured, the building effect meets the design requirement, and the accuracy of a base layer of subsequent construction is facilitated.

Description

A precise positioning method for large-slope sloping roof formwork

Technical field

The invention belongs to the technical field of building construction, and particularly relates to a method for accurately positioning templates for large-slope sloping roofs.

Background technique

In recent years, a large proportion of buildings have adopted pitched roof designs. Sloping roofs can effectively resist seepage and leakage, provide heat insulation, smooth drainage, and improve the living environment on the top floor; they also increase the space used in the building, improve space utilization, and increase the aesthetic effect. They are increasingly favored by the market. The roofs of these buildings generally have characteristics such as steep slopes, large spans, high requirements for formwork support, difficulty in constructing inclined operating surfaces, and difficulty in controlling the quality of concrete construction. The existing method is to first set up scaffolding, and then use a wire hammer to position the plane and elevation. High-altitude construction is difficult. The difficulty in elevation and plane positioning construction results in inaccurate spatial positioning. It is difficult to achieve smooth roof ridge lines, slope lines, and turning lines. Straight, it is difficult to make the formwork flat, resulting in poor construction results.

Contents of the invention

The purpose of the present invention is to overcome the defect of inaccurate positioning of sloped roof formwork in the prior art and provide a method for accurate positioning of large-slope sloped roof formwork.

The invention provides a method for precise positioning of large-slope inclined roof templates, which includes the following steps:

Step 1: Set out the underlying structural plate according to the roof projection plane of the architectural design drawing;

Step 2: Mark the control line on the underlying structural plate based on the lofting results, and calculate the elevation of the underlying structural plate at both end points of the turning line based on the architectural design drawings;

Step 3: Set vertical poles of corresponding heights at both ends of the turning line according to the elevation of the underlying structural plate;

Step 4: Connect the tops of the corresponding vertical poles through steel wires to form a turning steel wire line;

Step 5: Set up the ridge scaffolding according to the elevation of the underlying structural plate of the turning steel wire line, and connect the vertical poles to the ridge scaffolding; support the main keel on the top of the ridge scaffolding, support the secondary keel on the main keel, and fix the turning template on the secondary keel superior;

Step 6: Set up the roof scaffolding again according to the elevation of the underlying structural plate of the turning steel wire, and connect the vertical poles to the roof scaffolding; support the main keel on the top of the roof scaffolding, support the secondary keel on the main keel, and fix the roof template on the secondary keel. on the keel;

Step 7: Bind the steel bars within the template according to the architectural design drawings.

A further solution is that in step 1, for a multi-story sloping roof building, the bottom structural panel is a sub-top floor; for a single-story sloping roof building, the bottom structural panel is a floor.

A further solution is that in step 2, the control line is the projection of the turning line on the underlying structural board.

A further solution is that if there is an obstacle on the corresponding control line on the underlying structural plate, the control line will be offset until there is no obstacle on the control line; after the offset, the elevation position of the underlying structural plate will be controlled after the offset. The line is again offset in the opposite direction to the projection plane of the turning line.

A further solution is that in step 5, the turning template is an inverted V-shaped structure with a width of 100 mm on each side.

A further solution is that in step 6, the roof formwork is located on top of the turning formwork, and the top of the roof formwork is at the same height as the center of the steel wire.

A further solution is that the support height of the turning formwork is the height of the steel wire minus the thickness of the roof formwork.

Compared with the existing technology, the beneficial effects of the present invention are: before installing the formwork, the present invention first lays out the roof projection plane on the underlying structural board according to the architectural design drawings, determines the position of the control line, and then calculates according to the architectural drawings. The elevations of the underlying structural panels at both ends of the turning line are set up with vertical poles, and then the tops of the corresponding vertical poles are connected through steel wires. The position of the turning formwork is determined based on the steel wires, and then the roof formwork is accurately positioned to ensure the flatness of the roof formwork and the architectural effect conforms to the design. requirements, which is conducive to the accuracy of the base layer for subsequent construction.

Description of drawings

The following drawings are only for schematic illustration and explanation of the present invention and are not used to limit the scope of the present invention. Among them:

Figure 1: Flow chart of the template positioning method of the present invention;

Figure 2: A schematic diagram of connecting elevated points with steel wires based on the relationship between architectural design drawings;

Figure 3: Schematic diagram of setting the turning template according to the steel wire;

Figure 4: Rendering of setting the roof panel template according to the turning template;

Figure 5: Schematic cross-section of turning formwork and roof panel formwork;

Figure 6: Partial architectural design drawings;

In the picture: 1. Vertical pole; 2. Steel wire; 3. Turning formwork; 4. Roof formwork; 5. Control line; 6. Turning line.

Detailed ways

In order to make the purpose, technical solution, design method and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

As shown in Figures 1-5, the present invention provides a method for precise positioning of large-slope sloping roof templates, which includes the following steps:

Step 1: Locate the underlying structural plate according to the roof projection plane of the architectural design drawings, stake out the turning line 6 on the plane position and connect it according to the relationship of the architectural design drawings;

Step 2: Mark the control line 5 on the underlying structural plate based on the lofting results, and calculate the elevation of the underlying structural plate at both end points of the turning line 6 according to the architectural design drawings;

Step 3: Set vertical poles 1 of corresponding heights at both ends of the turning line 6 according to the elevation of the underlying structural plate;

Step 4: Connect the tops of the corresponding poles 1 through steel wires 2 to form the roof ridge wire 2, the turning wire 2 and the slope change wire 2. This step requires tightening the wire 2 to ensure that the wire 2 is a straight line between the two points. , to avoid moving the elevation point and affecting the positioning accuracy;

Step 5: Set up the ridge scaffolding at the bottom of the turning steel wire line according to the elevation of the underlying structural plate of the turning steel wire line, and connect the vertical pole 1 to the ridge scaffolding; support the main keel on the top of the ridge scaffolding, and support the secondary keel on the main keel. The turning template 3 is fixed on the sub-keel;

Step 6: Set up the roof scaffolding again according to the elevation of the underlying structural plate of the turning steel wire, and connect the vertical pole 1 to the roof scaffolding; support the main keel on the top of the roof scaffolding, support the secondary keel on the main keel, and fix the roof formwork 4 On the secondary keel, in this embodiment, the roof formwork 4 is a double-layer clear water board, and the lining board is a 15mm thick mirror panel. The panel is made according to the design requirements;

Step 7: Bind the steel bars in the formwork according to the architectural design drawings, and protect the finished product to avoid damage to the clear water formwork and lead to rework. After the steel bars are tied, pour the roof formwork 4.

In step 1, as shown in Figure 6, the turning line 6 in the architectural design drawing is projected onto the underlying structural plate according to the roof projection plane of the architectural design drawing. Wherein, for a multi-story sloped roof building, the underlying structural plate is the sub-top floor; for a single-story sloping roof building, the bottom structural plate is the floor.

As shown in Figure 5, in step 2, the control line 5 is the projection of the turning line 6 on the underlying structural board. When marking the control line 5, if there are obstacles on the corresponding control line 5 on the underlying structural plate, the control line 5 will be offset until there are no obstacles on the control line 5; after the offset, the elevation of the underlying structural plate will be After the position is shifted, the control line 5 is shifted in the opposite direction again to the projection plane with the turning line 6 . It should be noted that the underlying structural plate in this embodiment is flat by default. When the underlying structural plate is a non-flat floor or floor slab, it is also necessary to set an elevation level when calculating the elevation of the underlying structural plate.

In step 5, the turning formwork 3 has an inverted V-shaped structure with a width of 100 mm on each side. When the roof formwork 4 is set, the hypotenuse of the turning formwork 3 can also support the roof formwork 4.

In step 6, the roof formwork 4 is located on the top of the turning formwork 3, and the top of the roof formwork 4 is at the same height as the center of the steel wire 2. The support height of the turning formwork 3 is the height of the steel wire 2 minus the roof formwork 4. thickness of.

In the above, the turning line 6 is a line that divides the quadrilateral into two triangles according to the architectural effect because the four elevation points are not on the same plane in a quadrilateral plate formed by the span of the horizontal and vertical axes.

The embodiments of the present invention have been described above. The above description is illustrative, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements in the market of the embodiments, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (7)

1. A precise positioning method for large-slope sloping roof formwork, which is characterized by including the following steps: Step 1: Set out the underlying structural plate according to the roof projection plane of the architectural design drawing; Step 2: Mark the control line on the underlying structural plate based on the lofting results, and calculate the elevation of the underlying structural plate at both end points of the turning line based on the architectural design drawings; Step 3: Set vertical poles of corresponding heights at both ends of the turning line according to the elevation of the underlying structural plate; Step 4: Connect the tops of the corresponding vertical poles through steel wires to form a turning steel wire line; Step 5: Set up the ridge scaffolding according to the elevation of the underlying structural plate of the turning steel wire line, and connect the vertical poles to the ridge scaffolding; support the main keel on the top of the ridge scaffolding, support the secondary keel on the main keel, and fix the turning template on the secondary keel superior; Step 6: Set up the roof scaffolding again according to the elevation of the underlying structural plate of the turning steel wire, and connect the vertical poles to the roof scaffolding; support the main keel on the top of the roof scaffolding, support the secondary keel on the main keel, and fix the roof template on the secondary keel. on the keel; Step 7: Bind the steel bars within the template according to the architectural design drawings. 2. A method for precise positioning of large-slope sloping roof formwork according to claim 1, characterized in that in step 1, for a multi-story sloping roof building, the bottom structural panel is the sub-top floor; It is a single-story building with a pitched roof, and the underlying structural plate is the floor. 3. A method for accurately positioning templates for large-slope sloping roofs according to claim 1, characterized in that in step 2, the control line is the projection of the turning line on the underlying structural plate. 4. A method for precise positioning of large-slope roof formwork according to claim 3, characterized in that if there is an obstacle on the corresponding control line on the underlying structural board, the control line will be offset until the control line There is no obstacle on the control line; after the offset, the offset control line is again offset in the opposite direction to the projection surface of the turning line at the elevation position of the underlying structural plate. 5. A method for precise positioning of large-slope inclined roof formwork according to claim 1, characterized in that in step 5, the turning formwork is an inverted V-shaped structure with a width of 100 mm on each side. 6. A method for accurately positioning the large-slope roof formwork according to claim 5, characterized in that in step 6, the roof formwork is located at the top of the turning formwork, and the top of the roof formwork is at the center of the steel wire. The height is the same. 7. A method for accurately positioning the formwork of a large slope inclined roof according to claim 6, characterized in that the support height of the turning formwork is the height of the steel wire minus the thickness of the roof formwork.