CN204662742U - The movable surface construction structure of a kind of pitched roof - Google Patents

Abstract

The utility model discloses a movable surface layer construction structure for a sloping roof. A plurality of limit water-stop bolts are installed on the bottom formwork, and a vertical keel is fixed on the upper part of the limit water-stop bolts; the vertical keel is used for installing multiple surface Layer formwork, the surface formwork is flush with the bottom surface of the vertical keel; the two sides of the surface formwork corresponding to the position of the vertical keel are respectively provided with side pressure bones, and are connected and fixed with the vertical keel through the side pressure bones, and the rest of the surface layer The formwork is directly fixed laterally with the surface formwork corresponding to the position of the vertical keel; the surface formwork and the bottom formwork are used for pouring surface structure concrete. The utility model can effectively control the thickness of the surface structure of the sloping roof. During construction, it is installed step by step and poured step by step, so as to ensure the dense surface structure, controllable section size and smooth surface, ensure the compactness of the concrete, ensure the quality of the concrete construction, and avoid In the past, the delay in construction period and economic loss caused by rework and repair due to structural leakage and leakage have significantly reduced construction costs.

Description

A construction structure of movable surface course for sloping roof

technical field

The utility model relates to the field of building engineering construction, in particular to a surface layer construction structure for slope roofs.

Background technique

With the development of the construction industry and the continuous improvement of the public's aesthetic level, in order to meet the needs of people's diversified choices in life, in recent years, many novel, unique and diverse slope roof structures have appeared in architectural design. In the construction of traditional sloping roofs (usually referring to sloping roofs with a slope between 25 degrees and 75 degrees), it is often used to install slope bottom formwork or attach a layer of steel wire mesh on the reinforcement surface for pouring and compaction. It often causes the concrete to slip and segregate, which makes it difficult to guarantee the thickness of the slab roof, and it is easy to produce cracks due to gravity before the initial setting of the concrete. If a double-layer fixed formwork is used for a sloping roof with a large slope, the method is similar to the construction process of a shear wall. On the one hand, the construction cost is high, and on the other hand, the construction is relatively difficult.

Utility model content

The utility model aims to solve the technical problems that the construction of the current sloping roof surface structure is relatively difficult and the construction quality is difficult to guarantee. It provides a sloping roof movable surface construction structure, which is easy to install and disassemble, and can Effectively control the thickness of the roof structure to ensure the quality of concrete forming on the slope.

In order to solve the above technical problems, the utility model is realized through the following technical solutions:

A movable surface construction structure for a sloping roof, comprising a bottom formwork, on which a plurality of limit waterstop bolts are installed, and a vertical keel is fixed on the upper part of the limit waterstop bolts; the vertical keel is used for For installing a plurality of surface formwork, the surface formwork is flush with the bottom surface of the vertical keel; wherein the two sides of the surface formwork corresponding to the position of the vertical keel are respectively provided with side pressure bones, and through The side pressure bone is connected and fixed to the vertical keel, and the remaining surface formwork is directly fixed laterally to the surface formwork corresponding to the position of the vertical keel; the surface formwork and the bottom formwork It is used for pouring surface structure concrete.

Wherein, the distance between two adjacent limit waterstop bolts is 1000-1500mm.

Wherein, the lengths of the bottom ends of the limit waterstop bolts exposed to the bottom formwork and the top ends of the vertical keels are both 80-100 mm.

Wherein, the length of the surface layer template is 1000-1200 mm, and the width is 500-600 mm.

Wherein, the vertical keel is double-assembled with square wood, and the size of the square wood is 40mm*60mm or 50mm*50mm.

Wherein, the length of the lateral pressure bone is 20-30cm, the width is 30mm, and the thickness is 40mm.

The beneficial effects of the utility model are:

(1) The utility model adopts the vertical keel as the basis for installing the surface formwork to effectively control the thickness of the slope roof surface structure. The surface formwork is prefabricated, which is convenient for installation and disassembly. During construction, it is installed step by step and poured step by step. Layer formwork installation and concrete pouring do not interfere with each other on the working face, and they are carried out sequentially, which is simple to operate and convenient to construct, and can ensure that the surface layer structure is dense, the cross-sectional size is controllable and the surface is smooth, and the molding quality of the slope concrete is better guaranteed;

(2) Compared with the traditional single-layer formwork construction structure, the utility model can effectively avoid the defect of concrete slipping, and the concrete pouring and pounding can easily achieve a compact effect, which ensures the compactness of the concrete, ensures the construction quality of the concrete, and avoids Delay in construction period and economic loss caused by rework and repair of structural seepage and leakage;

(3) Compared with the traditional double-layer fixed formwork construction structure, the utility model significantly reduces the construction cost, and its input cost can be reduced by about 60%.

Description of drawings

Fig. 1 is the structural representation of the movable surface layer construction structure of the slope roof provided by the utility model;

Fig. 2 is the schematic plan view of the movable surface layer construction structure of the sloping roof provided by the utility model. In the figure: 1-limit water-stop bolt; 2-vertical keel; 3-surface formwork; 4-side pressure bone; 5-iron nail; 6-waterstop; 7-surface structural concrete; 8-bottom template.

Detailed ways

In order to further understand the invention content, characteristics and effects of the present utility model, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

As shown in Figures 1 and 2, this embodiment provides a movable surface construction structure for a sloping roof, which mainly consists of a limit water stop bolt 1, a vertical keel 2, a surface formwork 3, side pressure frames 4, iron Nails 5, water stop sheets 6, surface structural concrete 7, and bottom formwork 8. The surface structure concrete 7 is poured between the surface formwork 3 and the bottom formwork 8, which can ensure that the structure of the surface structure concrete 7 is dense, the cross-sectional size is controllable and the surface is smooth.

The limit water stop bolts 1 are arranged horizontally and vertically on the bottom template 8, and the distance between two adjacent limit water stop bolts 1 is controlled at 1000-1500mm. Each limit water-stop bolt 1 is welded with three water-stop sheets 6, and the three water-stop sheets 6 are respectively arranged on the position close to the lower surface of the surface formwork 3, the position close to the upper surface of the bottom formwork 8, and the surface layer structural concrete. 7, the position in the middle; the water stop sheet 6 and the limit water stop bolt 1 should be fully welded tightly, on the one hand to ensure the thickness of the surface structure concrete 7, on the other hand it can also extend the seepage route and increase the resistance to seepage water, thereby preventing Structure leaks.

The vertical keel 2 is locked and fixed on the upper part of the limit water-stop bolt 1, which can be made of 40mm*60mm or 50mm*50mm square wood double-piece, and the gap between the double-piece is nailed with small wooden strips. The lengths of the bottom end of the limit waterstop bolt 1 exposed to the bottom template 8 and the top end exposed to the vertical keel 2 are both 100mm.

The surface layer template 3 is provided with multiple pieces, and the length of each surface layer template 3 is controlled at 1000-1200mm, and the width is controlled at 500-600mm. According to the layout spacing of the vertical keel 2 (also the layout spacing of the limit water-stop bolt 1), the two sides of a part of the surface formwork 3 correspond to the positions of the vertical keel 2, and the other part of the surface formwork 3 has no vertical keel 2 set up. Among them, the surface template 3 corresponding to the position of the vertical keel 2, nails 20-30cm long and 30mm*40mm side pressure bone 4 on both sides during prefabrication, and then through the side pressure bone 4 with iron nails 5 and vertical keel 2 Nail firmly; and the remaining surface formwork 3 can be directly fixed laterally with the above-mentioned surface formwork 3 corresponding to the position of the vertical keel 2, as shown in Figure 2 . The length of the surface formwork 3 should be 10mm smaller than the clear distance between the vertical keels 2 on both sides (5mm at both ends), so as to facilitate the placement of the surface formwork 3. When installing, the lower edge of the surface formwork 3 and the vertical The lower edge of the keel 2 is aligned.

The construction method of above-mentioned sloping roof movable surface construction structure, its concrete steps are as follows:

1. Install the bottom formwork 8: After the support system of the slope roof bottom formwork 8 is erected according to the specification requirements, adjust the height of the adjustable jacking and lay the slope roof bottom formwork 8. The joints must be tight. Clean up the sundries on the bottom formwork 8, do not stain the steel bars when applying the release agent, and avoid contamination of the release agent on the joints of the concrete. After passing the self-inspection, submit it to the supervisory unit for pre-inspection.

2. Stretch the line, stake out, and determine the position of the limit water-stop bolt 1: use computer CAD technology to design and draw, draw the position diagram of the vertical keel 2 and the limit water-stop bolt 1, and determine the grade number of the surface template 3, On-site construction uses a digital total station for construction stakeout and line snapping;

The arrangement distance of limit water stop bolts 1 is controlled at about 1000-1500mm. This method can not only ensure the thickness of the structure, but also prolong the seepage route, increase the resistance to seepage water, and prevent leakage.

3. After determining the exact position, use a hand drill to drill holes, and clean up the sawdust produced by the bottom template 8 in the hand drill holes.

4. Binding steel bars on sloping roofs: In order to avoid the subsidence of the steel bars on the slab surface during the pouring and tamping of the surface structure concrete 7, and to ensure the effective height of the bars, an effective supporting horse stool bar should be added between the double-layer steel mesh to support the horse stool The reinforcement is not less than φ10. When the reinforcement is ≥φ12, the spacing is not greater than 1000mm*1000mm. When the reinforcement is <φ12, the spacing is not greater than 600mm*600mm. There are no less than 2 supports in the same direction, and the distance from the end of the reinforcement Greater than 150mm. The contact points between the horse stool bars and the upper and lower layers of steel bars are spot welded. At the same time, the upper and lower layers of steel mesh within 2 to 3 surrounding areas are also spot welded to enhance the overall stability of the steel mesh. The steel bars should be tied firmly to each other to prevent the buckle from loosening due to collision and vibration when pouring and tamping the surface structure concrete 7, and the steel bars shifting, resulting in exposed bars.

5. Install the limit water stop bolt 1: During the installation process, the water stop sheet 6 and the limit water stop bolt 1 should be fully welded tightly to prevent structural leakage and at the same time ensure the thickness of the concrete protective layer 7. In addition, the limit water stop The bolt 1 exposed to the bottom formwork 8 and the vertical keel 2 should not be too long, preferably 80-100mm.

6. According to the direction of the sloping roof, from the bottom of the slope to the top of the slope, lock the vertical keel 2 of the surface formwork 3 on the upper part of each limit water-stop bolt 1; the vertical keel 2 can be 40mm*60mm or 50mm*50mm The square wood is double-assembled, and the gap between the vertical keel 2 pairs of square wood is nailed with small wooden strips.

7. Prefabrication of the surface formwork 3: The surface formwork 3 is graded by lofting and prefabricated in advance, with a width of 300-500mm and a length of 900-1200mm. The same formwork level should be used as far as possible during prefabrication. The deficiencies are determined after on-site lofting. On the one hand, it is convenient for formwork installation and turnover, and saves materials; on the other hand, it is also conducive to concrete pouring and checking whether the concrete pouring is compact during construction, which can appropriately reduce the lapping time of the upper and lower layers of concrete and reduce the generation of cold joints.

When the graded surface template 3 is prefabricated, nail 20-30cm long 30mm*40mm side pressure bone 4 on both sides; the length of the surface layer template 3 should be 10mm smaller than the clear distance between the vertical keels 2 on both sides Each 5mm), so that surface layer formwork 3 is placed. When installing, align the lower edge of the surface template 3 with the lower edge of the vertical keel 2, and nail the side pressure bone 4 and the vertical keel 2 firmly by iron nails 5.

8. Pouring the surface structure concrete 7: When pouring the surface structure concrete 7, temporarily set a 50cm high baffle at the concrete pouring opening of the surface formwork 3 to prevent the aggregate from slipping during pouring. For sloping roofs with densely arranged steel bars, φ30 small vibrating rods can be used to vibrate. During the pouring process, a small hammer can be used to check whether the pouring has been compacted. When pouring the surface layer structure concrete 7, you can use the inclined eaves as the starting point, and pour circularly around the roof. After pouring one layer, you can install the upper layer formwork 3, install the surface layer formwork 3 step by step, and then pour concrete step by step , each other in turn cycle, until the end of pouring. For sloping roofs with large structural dimensions and large perimeters, the pouring time should be calculated according to the pouring speed of each layer of concrete before construction; if necessary, appropriate consideration can be given to adding retarders to avoid concrete lapping. Create cold seams. If the upper-level concrete has initially set before pouring the next-level concrete on a sloping roof with a large perimeter, the construction joints of the upper-level concrete should be treated, the scum and roughening interface should be removed, and the next-level concrete should be poured after brushing pure cement slurry .

9. Remove the surface formwork 3 and the bottom formwork 8: the surface formwork 3 can be removed for recycling after the strength of the surface structure concrete 7 reaches 1.2N/mm ^2. Care should be taken when removing the formwork, and random prying is strictly prohibited, so as not to cause a limit For the missing edges and corners of water-stop bolts 1 and surface structural concrete 7, the bottom formwork 8 should be demolished after approval according to the regulations on formwork removal for beams and slabs under the same conditions and based on the test compressive strength of test blocks under the same conditions.

Although the preferred embodiment of the utility model has been described above in conjunction with the accompanying drawings, the utility model is not limited to the above-mentioned specific implementation, and the above-mentioned specific implementation is only illustrative and not restrictive. Under the enlightenment of the utility model, those of ordinary skill can also make many specific transformations without departing from the spirit of the invention and the protection scope of the claims, and these all belong to the protection scope of the utility model.

Claims (6)

1. A kind of sloping roof movable type surface layer construction structure, comprises bottom formwork, is characterized in that, described bottom formwork is equipped with a plurality of limit water-stop bolts, and described limit water-stop bolt top is fixed with vertical keel; The vertical keel is used to install a plurality of surface formwork, and the surface formwork is flush with the bottom surface of the vertical keel; wherein the two sides of the surface formwork corresponding to the position of the vertical keel are respectively provided with The side pressing bone is connected and fixed with the vertical keel through the side pressing bone, and the remaining surface layer formwork is directly fixed laterally with the surface layer formwork corresponding to the position of the vertical keel; the surface layer The surface layer structure concrete is poured between the template and the bottom template. 2 . The movable surface construction structure of a sloping roof according to claim 1 , wherein the distance between two adjacent limiting water-stop bolts is 1000-1500 mm. 3. The movable surface construction structure of a sloping roof according to claim 1, characterized in that, the bottom end of the limit water-stop bolt is exposed to the bottom formwork, and the top end is exposed to the length of the vertical keel Both are 80-100mm. 4. A slope roof movable surface construction structure according to claim 1, characterized in that the length of the surface formwork is 1000-1200mm and the width is 500-600mm. 5. The movable surface construction structure of a sloping roof according to claim 1, characterized in that, the vertical keel is made of double square wood, and the size of the square wood is 40mm*60mm or 50mm*50mm. 6. The movable surface construction structure of a sloping roof according to claim 1, characterized in that, the length of the side pressure bone is 20-30cm, the width is 30mm, and the thickness is 40mm.