CN215631155U

CN215631155U - Prefabricated outdoor step

Info

Publication number: CN215631155U
Application number: CN202121120257.2U
Authority: CN
Inventors: 伍丹; 刘杰; 卢江; 濮玺; 李丹; 刘谭夏子
Original assignee: Hunan Dongfang Hongzhuang Construction Technology Co ltd; HUNAN DONGFANGHONG CONSTRUCTION GROUP
Current assignee: Hunan Dongfang Hongzhuang Construction Technology Co ltd; HUNAN DONGFANGHONG CONSTRUCTION GROUP
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-01-25
Anticipated expiration: 2031-05-24

Abstract

The utility model discloses a prefabricated outdoor ladder board, which has an L-shaped section, wherein a longer arm of the prefabricated outdoor ladder board is used as a step, a shorter arm of the prefabricated outdoor ladder board is used as the height of the step, a groove is formed in the upper surface of the longer arm, and a tongue-and-groove is formed in the lower end surface of the shorter arm; when the step is assembled into the stair, after the step at the lowest position is fixed, the shorter arm of the subsequent previous step is sequentially inserted into the concrete mortar cushion in the groove on the upper surface of the longer arm of the next step, and after the concrete mortar is solidified, each step is assembled into a stable integral piece. The step plates can be produced in a prefabrication factory according to design requirements, only the step plates need to be assembled on site, and the step length of the prefabricated step plates can be adjusted according to the design gradient and the actual gradient during assembly, so that the method is suitable for various construction site environments, the problems of construction speed, construction difficulty, construction quality and the like in site pouring can be solved, the engineering cost can be saved, and the influence of site wet operation on the environment can be reduced; the problem that the steel structure stairs are easy to rust can be solved.

Description

Prefabricated outdoor step

Technical Field

The utility model belongs to the field of PC (polycarbonate) components, and particularly relates to a prefabricated outdoor ladder board.

Background

Nowadays, the assembly type building is rapidly developed, the assembly type building is more and more widely applied to engineering, and the construction speed and the construction quality can be greatly improved.

The stair cast-in-place construction is difficult in the outdoor engineering construction process, and the phenomena that the stair template is difficult to support, the construction speed is low, and the whole engineering construction period is seriously influenced exist. Meanwhile, the stair of the outdoor engineering has a large gradient, so that the pouring quality cannot be well controlled during concrete pouring, the quality and the appearance of the stair finished product are caused to be problematic, and the integral image of the engineering is influenced. Moreover, if the steel structure stair is adopted outdoors, the steel structure stair can be worn and rusted under the erosion of long-term rainwater, the quality and appearance problems are caused, and meanwhile, the anti-skidding effect of the steel structure stair is not ideal.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a precast concrete stair tread which is convenient to construct and reliable in quality.

The cross section of the prefabricated outdoor ladder board is L-shaped, a longer arm of the prefabricated outdoor ladder board serves as a step, a shorter arm of the prefabricated outdoor ladder board serves as the height of the step, a groove is formed in the upper surface of the longer arm, and a tongue-and-groove is formed in the lower end face of the shorter arm; when the step is assembled into the stair, after the step at the lowest position is fixed, the shorter arm of the subsequent previous step is sequentially inserted into the concrete mortar cushion in the groove on the upper surface of the longer arm of the next step, and after the concrete mortar is solidified, each step is assembled into a stable integral piece.

In one embodiment of the above technical solution, the groove is a rectangular groove, the length of the groove is equal to the length of the step plate, and the width of the groove is not more than the total length of the longer arm minus the thickness of the shorter arm.

In one embodiment of the above technical solution, the depth of the groove is 10-15 mm.

In an embodiment of the above technical solution, the cross-sectional shape of the tongue-and-groove is an inverted U-shaped groove, and the groove is located at the center plane of the shorter arm in the thickness direction, and has the same length as the step plate.

In an embodiment of the above technical solution, the cross-sectional shape of the tongue-and-groove is a dovetail shape, and the length of the tongue-and-groove is the same as the length of the step plate at the center plane of the shorter arm in the thickness direction.

In one implementation mode of the technical scheme, the depth of the groove is larger than or equal to that of the groove, and the width of the groove is 15-25 mm.

The prefabricated step plate is used as a first-level step plate of a stair, so the end surface shape of the prefabricated step plate is designed to be L-shaped, a longer arm of the prefabricated step plate is used as a step, and a shorter arm of the prefabricated step plate is used as the step height. The upper surface of the longer arm is provided with a groove, and the lower surface of the shorter arm is provided with a tongue-and-groove. When each prefabricated step is assembled into a stair on a construction site, a concrete mortar cushion layer is paved in the groove on the upper surface of each step, then the shorter arm of the previous step is inserted into the concrete mortar cushion layer at the upper end of the next step, and the insertion position is determined according to design requirements. Because the outer side of the shorter arm of the stair plate is in contact with concrete mortar, and the rabbet at the lower end of the shorter arm is filled with the concrete mortar, after the concrete mortar is solidified, the concrete mortar enables the adjacent stair plates to form a stable integral piece, thereby forming a stable stair integral piece. The arrangement of the grooves in the upper surfaces of the stair boards and the on-site laying of the concrete mortar cushion layers in the grooves can facilitate adjustment of the step length and enhance the structural strength between the stair boards, and the arrangement of the grooves and tongues in the lower ends of the stair boards can further increase the contact area between the concrete mortar and the stair boards, so that the connection strength between the adjacent stair boards after the concrete mortar is solidified is further improved, and the overall stability of the stair is guaranteed. Briefly, the step can be produced at prefabricated mill according to the design requirement, and the scene only needs assemble each step, still can adjust the length of marking time of prefabricated step according to design slope and actual slope during the equipment, applicable in all kinds of job site environment. So adopt this outdoor prefabricated step with adjustable self-stabilization slope to have following advantage: the problems of construction speed, construction difficulty, construction quality and the like in site pouring can be solved; the finished precast concrete product has good quality and beautiful appearance, and can solve the problem that the steel structure stairs are easy to rust; the prefabricated step plate adopts standardized components, and standardized templates are produced in a factory, so that the engineering cost can be saved, and the influence of on-site wet operation on the environment can be reduced.

Drawings

Fig. 1 is a schematic side view of a first embodiment of the utility model.

Fig. 2 is a schematic side view of a second embodiment of the utility model.

Fig. 3 is a schematic side view of an assembled staircase (with an elevation angle of 30 °) according to an embodiment.

Fig. 4 is a schematic side view of the stair of the second embodiment assembled at an elevation angle of 45 °.

Detailed Description

First embodiment, as shown in fig. 1, the sectional shape of the prefabricated outdoor step board disclosed in this embodiment is L-shaped, the longer arm of the prefabricated outdoor step board serves as a step, the shorter arm of the prefabricated outdoor step board serves as a step height, the upper surface of the longer arm of the prefabricated outdoor step board is provided with a groove 1, and the lower end surface of the shorter arm of the prefabricated outdoor step board is provided with a tongue-and-groove 2.

The groove 1 of the present embodiment is a rectangular groove, the length of which is equal to the length of the step plate, and the width of which is not more than the total length of the longer arm minus the thickness of the shorter arm.

The cross section of the tongue-and-groove 2 is in an inverted U shape, is positioned on the central plane in the thickness direction of the shorter arm, and has the length of the step plate.

The end face dimensions of the step plate of this embodiment are 300mm × 150mm × 60mm in width × height × thickness, the dimensions of 240mm × 10mm in width × depth of the groove, and the dimensions of 20mm × 10mm in width × depth of the tongue-and-groove.

Before the stair boards are assembled into the stairs on the construction site, the soil body at the place where the stairs are laid is constructed into the corresponding gradient according to the designed gradient of the stairs.

During assembly, the lowest step is fixed, the rabbet at the lower end of the shorter arm of the step is inserted into the ground concrete mortar cushion layer, so that concrete mortar enters the rabbet in an extrusion state, meanwhile, two sides of the shorter arm are in contact with the concrete mortar, and the longer arm is placed and fixed on the slope surface of the slope with the corresponding height.

When the second step plate is assembled, a concrete mortar cushion layer is paved in the groove of the first step plate, then the shorter arm of the second step plate is inserted into the concrete mortar cushion layer according to the designated position, mortar enters the rabbet in an extrusion state, meanwhile, two sides of the shorter arm are in contact with the concrete mortar, and the longer arm is placed and fixed on the slope surface of the slope with the corresponding height.

And the subsequent steps are analogized in sequence. Of course, the concrete mortar cushion must be laid in the groove of the uppermost step plate. The surface of the concrete mortar cushion layer on the upper surface of each step needs to be processed to be smooth, and the upper surface of the whole step is a plane.

When the concrete mortar in the grooves sets, the flights form a stable stair whole, as shown in fig. 3.

In the second embodiment, as shown in fig. 2, the difference between the present embodiment and the first embodiment is: the cross section of the rabbet at the central plane of the lower end of the shorter arm of the step plate is in a dovetail shape. As can be seen from the shape difference between the dovetail shape and the inverted U shape, the stability of the assembled and fixed step plate of the present embodiment is better, so that the step plate disclosed in the present embodiment is more suitable for assembling stairs with larger elevation angle than the first embodiment, as shown in fig. 4. The step of this embodiment can also adopt the step with the same size as the embodiment, but the connection position between the adjacent steps changes, namely the width of step can be adjusted through the recess of step upper surface. Other structures and assembling operations of the embodiment are the same as those of the first embodiment.

Can see from the structure of above-mentioned step and the construction operation of assembling into whole stair, adopt this outdoor prefabricated step adjustable from the steady slope to have following advantage: the problems of construction speed, construction difficulty, construction quality and the like in site pouring can be solved; the finished precast concrete product has good quality and beautiful appearance, and can solve the problem that the steel structure stairs are easy to rust; the prefabricated step plate adopts standardized components, and standardized templates are produced in a factory, so that the engineering cost can be saved, and the influence of on-site wet operation on the environment can be reduced.

In addition, the utility model can be customized according to project requirements, and can be made into various forms such as fair-faced concrete, pervious concrete, colored concrete and the like to meet the requirements of outdoor landscapes.

Claims

1. The utility model provides a prefabricated outdoor step, its characterized in that: the shape of the broken L-shaped pedal is L-shaped, the longer arm of the L-shaped pedal serves as a step, the shorter arm of the L-shaped pedal serves as the step height, the upper surface of the longer arm is provided with a groove, and the lower end surface of the shorter arm is provided with a tongue-and-groove; when the step is assembled into the stair, after the step at the lowest position is fixed, the shorter arm of the subsequent previous step is sequentially inserted into the concrete mortar cushion in the groove on the upper surface of the longer arm of the next step, and after the concrete mortar is solidified, each step is assembled into a stable integral piece.

2. A prefabricated outdoor ladder panel according to claim 1, wherein: the groove is a rectangular groove, the length of the groove is equal to that of the ladder plate, and the width of the groove is less than or equal to the sum of the length of the longer arm and the thickness of the shorter arm.

3. A prefabricated outdoor ladder panel according to claim 2, wherein: the depth of the groove is 10-15 mm.

4. A prefabricated outdoor ladder panel according to claim 1, wherein: the cross section of the tongue-and-groove is in an inverted U-shaped groove, the tongue-and-groove is positioned at the central plane of the shorter arm in the thickness direction, and the length of the tongue-and-groove is the same as that of the ladder board.

5. A prefabricated outdoor ladder panel according to claim 1, wherein: the cross section of the rabbet is in a dovetail shape, is positioned on the central plane of the shorter arm in the thickness direction, and has the same length as the length of the step plate.

6. A prefabricated outdoor ladder panel according to claim 1, wherein: the depth of the groove is more than or equal to that of the groove, and the width of the groove is 15-25 mm.