CN211873343U - Mounting structure of prefabricated staircase - Google Patents
Mounting structure of prefabricated staircase Download PDFInfo
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- CN211873343U CN211873343U CN201922358378.XU CN201922358378U CN211873343U CN 211873343 U CN211873343 U CN 211873343U CN 201922358378 U CN201922358378 U CN 201922358378U CN 211873343 U CN211873343 U CN 211873343U
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Abstract
The utility model discloses a mounting structure of a prefabricated staircase, which comprises an upper mounting structure and a lower mounting structure; the upper mounting structure comprises a first leveling layer between a second plane and the prefabricated staircase, a first filling layer between a first vertical surface and the prefabricated staircase, a second filling layer filled above the first plane and a first connecting structure for connecting the upper part of the prefabricated staircase and the upper ladder beam; the lower mounting structure comprises a second leveling layer between the fourth plane and the prefabricated staircase, a third filling layer between the second vertical surface and the prefabricated staircase and a fourth filling layer filled above the third plane. This mounting structure of prefabricated stair's simple structure, the prefabricated stair location of installing is accurate, and no displacement, structural safety does not have the hidden danger. The reworking and repairing processes such as polishing, picking and the like caused by the displacement of the prefabricated part in later-stage decoration project are avoided, and the generation of dust and building slag is reduced. The construction quality is practically improved, and the method has the best economic and social benefits.
Description
Technical Field
The utility model relates to a technical field of assembly type structure particularly, relates to the mounting structure of prefabricated stair.
Background
The prefabricated concrete structure building is a concrete structure type house building which is designed and built in a field assembly mode by mainly using reinforced concrete prefabricated components produced in a factory. Generally, the method is divided into two categories of fully assembled buildings and partially assembled buildings: the fully assembled building is generally a multi-storey building with low requirements for seismic fortification; the main prefabricated components of the partially assembled building are generally prefabricated components which are connected through cast-in-place concrete on site to form the building with an assembled integral structure. Because the prefabricated components are mechanically produced in a factory on a large scale, the production quality is good, the efficiency is high, and meanwhile, the on-site assembly construction of the prefabricated components has the advantages of water conservation, energy conservation, low labor cost, short construction period and the like, the prefabricated concrete structure building has the advantages of high construction speed, contribution to winter construction, high production efficiency, good product quality, reduction of material loss and the like, and has profound significance for promoting the development of green building materials and green building industries. Therefore, the realization of building industrialization is a necessary way for development, transformation and upgrade of the building industry and is revolutionary transformation of the production mode of the building industry.
However, as some industrial construction projects are operated successively, a set of standard technical system for controlling the construction quality of the fabricated concrete structure building is lacked, so that the construction technical means adopted in the implementation process of each project are greatly differentiated, and the construction quality control is not easy to be well guaranteed. Generally, the following problems are easily exposed during construction:
(1) the construction quality of the transition layer is poor and the cost is high.
In the project of assembling the integral concrete shear wall structure, the transition layer is used as a conversion layer of a lower cast-in-place concrete structure and an upper assembled concrete structure, is a full cast-in-place floor and is a key floor for pre-embedded parts such as a dowel, a steel plate, a diagonal bracing limiter and the like, so that the requirements on the construction precision of the dowel and the pre-embedded parts and the forming quality of concrete are high, and the technical requirements are strict. However, in the existing construction process, the transition layer is disturbed due to inaccurate positioning and infirm fixing, which directly results in rework, increases construction cost, and even ensures that the quality safety of the industrial floor cannot be guaranteed.
(2) The quality of the prefabricated parts in the industrial floors is not easy to control in the installation and construction.
The prefabricated components are various in types and generally comprise prefabricated walls, prefabricated columns, prefabricated beams, prefabricated composite floor slabs, prefabricated cladding panels, prefabricated PCF (Poly Crystal fiber) plates, prefabricated balconies, prefabricated air-conditioning plates, prefabricated floating window plates, prefabricated stairs, various special-shaped prefabricated components and the like. The installation of prefabricated components is a major difficulty of the whole assembly type building, and the prefabricated components are required to be accurately positioned and have high verticality control requirements. However, there is no standard for various types of prefabricated parts, and the quality of the prefabricated parts depends on the operation level of the installation worker. Wherein especially prefabricated staircase's installation, because prefabricated staircase belongs to the span in assembled concrete structure big, the weight is heavy, the fragile component of hoisting point, consequently to prefabricated staircase's location and fastening fairly difficult, for example, the deviation takes place easily in the height position of prefabricated staircase butt joint department from top to bottom, this leads to later stage decoration to take place a large amount of projects of polishing, also can cause the raise dust pollution when increasing construction cost, violates with green building's this intention.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides prefabricated staircase's mounting method and prefabricated staircase's mounting structure to solve among the prior art prefabricated component location inaccurate with the insecure technical problem of installation.
In order to achieve the above object, according to an aspect of the present invention, there is provided a method of installing a prefabricated staircase. The prefabricated staircase comprises an upper staircase beam, a lower staircase beam, a prefabricated staircase upper part, a prefabricated staircase lower part and a prefabricated staircase lower part, wherein the prefabricated staircase upper part is connected with the upper staircase beam, the prefabricated staircase lower part is connected with the lower staircase beam, the upper staircase beam comprises a first plane, a second plane and a first vertical face for connecting the first plane and the second plane, the lower staircase beam comprises a third plane, a fourth plane and a second vertical face for connecting the third plane and the fourth plane, and the installation method comprises the following steps:
(1) drawing elevation control lines on the side walls of the upper ladder beam and the lower ladder beam; drawing an X-direction control line and a Y-direction control line on the first plane and/or the third plane;
(2) leveling on the second plane to form a first leveling layer; leveling on the fourth plane to form a second leveling layer, and controlling the thicknesses of the first leveling layer and the second leveling layer according to the elevation control line;
(3) hoisting the prefabricated staircase, enabling the upper part of the prefabricated staircase to fall on the upper part and the lower part of the first leveling layer to fall on the second leveling layer, and controlling the falling position of the prefabricated staircase according to the X-direction control line and the Y-direction control line;
(4) the upper part of the prefabricated staircase is fixedly connected with an upper staircase beam, and the lower part of the prefabricated staircase is fixedly connected with a lower staircase beam;
(5) filling above the first plane and the third plane according to the elevation control line.
The arrangement of the X-direction control lines and the Y-direction control lines facilitates the adjustment of the direction of the prefabricated parts by taking the X-direction control lines and the Y-direction control lines as references after the prefabricated parts are hoisted, so that the prefabricated parts are more accurately positioned, and the butt joint of the prefabricated parts and other parts is prevented from being influenced. The installation verticality of the prefabricated part can be improved by leveling, and the installation accuracy is further improved. The through hole controls the leveling thickness according to the elevation control line, so that the height of the butt joint surface of the stairs can be ensured to be consistent. The steps have a synergistic effect, so that the inclination and the displacement of the prefabricated part during installation can be prevented, the installation direction and the verticality of the prefabricated part can be further adjusted, the installation and construction quality of the prefabricated part is ensured to be reliable, the structure safety is ensured, and no hidden danger is left. The reworking and repairing processes such as polishing, picking and the like caused by displacement of the prefabricated part in later-stage decoration and fitment engineering are avoided, dust raising and slag building are reduced, and manpower, financial resources and construction period are saved. The construction quality is practically improved, the reworking is avoided, and the method has the best economic and social benefits.
Furthermore, the first vertical surface is connected with the prefabricated staircase by adopting cement-based grouting material.
Furthermore, a protruding steel bar is arranged on the second plane and inserted into a prefabricated hole in the prefabricated staircase; and the gap between the steel bar and the wall of the prefabricated hole is formed after the steel bar is inserted into the prefabricated hole, the lower part of the gap is filled with cement-based grouting material, and the upper part of the gap is filled with mortar.
Furthermore, the prefabricated staircase upper portion is provided with a mounting surface matched with the bottom surface of the upper ladder beam, and the bottom surface of the upper ladder beam is connected with the mounting surface through a first connecting assembly.
Further, the first connecting assembly comprises flat plates, two ends of each flat plate are respectively welded with the steel plate embedded in the mounting surface and the steel plate embedded in the bottom surface of the upper ladder beam.
Furthermore, a thin film protective layer is laid on the contact surface of the second leveling layer and the prefabricated staircase; the film protective layer is preferably a plastic film. The effect of plastic film on the one hand causes the damage to second screed-layer surface when preventing prefabricated staircase whereabouts and position adjustment to produce defects such as hole, the sliding resistance when on the other hand's effect reduces prefabricated building position adjustment makes the location more accurate and quick. In order to facilitate the installation of the plastic film and prevent the plastic film from falling off, plain cement paste can be brushed on the second leveling layer for bonding. In order to fully exert the function of the plastic film, two layers of plastic films are preferably used.
Further, the method also comprises the step of placing an elastomer on a second leveling layer before hoisting so as to form an elastomer filling layer between the second vertical surface and the prefabricated staircase; the elastomer is preferably a polystyrene lath; or the second vertical surface is connected with the prefabricated staircase by adopting cement-based grouting material. When the elastomer filling layer is adopted, the installation is more convenient and quick, and the elastomer filling layer is properly deformed under the extrusion of the prefabricated staircase, so that the gap between the second vertical face and the prefabricated staircase is fully filled, and the defect of the contact surface is obviously reduced.
Furthermore, a protruding steel bar is arranged on the fourth plane and inserted into a prefabricated hole in the prefabricated staircase; and the gap between the steel bar and the wall of the prefabricated hole is formed after the steel bar is inserted into the prefabricated hole, the lower part of the gap is filled with cement-based grouting material, and the upper part of the gap is filled with mortar.
Furthermore, the bottom surface of the lower portion of the prefabricated staircase is connected with the side surface of the lower ladder beam through a second connecting assembly.
Further, the second connecting assembly comprises an L-shaped connecting plate, two connecting surfaces of the L-shaped connecting plate are welded with a steel plate buried in the bottom surface of the lower portion of the prefabricated staircase and a steel plate buried in the side surface of the lower ladder beam respectively, a through hole is formed in the connecting surface of the L-shaped connecting plate and the lower ladder beam, and the steel bar and the bolt buried in the side surface of the lower ladder beam penetrate through the through hole and then are fastened through nuts. In order to prevent the hard joint between the L-shaped connecting plate and the steel plate and form a gap between the L-shaped connecting plate and the steel plate after welding, a partition plate can be placed between the L-shaped connecting plate and the steel plate, and the size of the partition plate is smaller than that of the steel plate. The separator is preferably, but not limited to, a teflon plate.
In order to achieve the above object, according to an aspect of the present invention, there is provided a mounting structure of a prefabricated staircase. The mounting structure comprises an upper mounting structure for connecting the upper part of the prefabricated staircase with an upper ladder beam and a lower mounting structure for connecting the lower part of the prefabricated staircase with a lower ladder beam, the upper ladder beam comprises a first plane, a second plane and a first vertical face for connecting the first plane and the second plane, and the lower ladder beam comprises a third plane, a fourth plane and a second vertical face for connecting the third plane and the fourth plane; the upper mounting structure comprises a first leveling layer between a second plane and the prefabricated staircase, a first filling layer between a first vertical surface and the prefabricated staircase, a second filling layer filled above the first plane and a first connecting structure for connecting the upper part of the prefabricated staircase and the upper ladder beam; the lower mounting structure comprises a second leveling layer between the fourth plane and the prefabricated staircase, a third filling layer between the second vertical surface and the prefabricated staircase and a fourth filling layer filled above the third plane.
This mounting structure of prefabricated stair's simple structure, the prefabricated stair location of installing is accurate, and no displacement, structural safety does not have the hidden danger. The reworking and repairing processes such as polishing, picking and the like caused by displacement of the prefabricated part in later-stage decoration and fitment engineering are avoided, dust raising and slag building are reduced, and manpower, financial resources and construction period are saved. The construction quality is practically improved, the reworking is avoided, and the method has the best economic and social benefits.
Further, the first filling layer is a cement-based grouting material layer; the second filling layer is a mortar layer.
Furthermore, the first connecting structure comprises a steel bar protruding from the second plane and a prefabricated hole arranged on the prefabricated staircase and used for inserting the steel bar; the first connecting structure further comprises a first cement-based grouting material filling layer filled at the lower part of the gap and a first mortar filling layer filled at the upper part of the gap.
Furthermore, the prefabricated staircase upper portion is provided with an installation surface matched with the bottom surface of the upper ladder beam, and the first connecting structure is a first connecting assembly for connecting the bottom surface of the upper ladder beam with the installation surface.
Further, the first connecting assembly comprises flat plates, two ends of each flat plate are respectively welded with the steel plate embedded in the mounting surface and the steel plate embedded in the bottom surface of the upper ladder beam.
Furthermore, a thin film protective layer is paved on the contact surface of the second leveling layer and the prefabricated staircase.
Further, the third filling layer is a cement-based grouting material layer, or the third filling layer is an elastomer filling layer; the fourth filling layer is a mortar layer.
Further, the lower mounting structure further comprises a second connecting structure for connecting the lower part of the prefabricated staircase with the lower ladder beam.
Furthermore, the second connecting structure comprises a steel bar protruding from the fourth plane and a prefabricated hole arranged on the prefabricated staircase and used for inserting the steel bar; the second connecting structure further comprises a second cement-based grouting material filling layer filled at the lower part of the gap and a second mortar filling layer filled at the upper part of the gap.
Furthermore, the second connecting structure is a second connecting assembly for connecting the bottom surface of the lower part of the prefabricated staircase and the side surface of the lower staircase beam.
Further, the second connecting assembly comprises an L-shaped connecting plate and a nut, two connecting surfaces of the L-shaped connecting plate are welded with a steel plate buried in the bottom surface of the lower portion of the prefabricated staircase and a steel plate buried in the side surface of the lower staircase respectively, a through hole is formed in the connecting surface of the L-shaped connecting plate and the lower staircase, and the steel bar buried in the side surface of the lower staircase and the bolt penetrate through the through hole and are fastened through the nut.
The present invention will be further described with reference to the accompanying drawings and the detailed description. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which form a part of the disclosure, are included to assist in understanding the disclosure, and the description provided herein and the accompanying drawings, which are related thereto, are intended to explain the disclosure, but do not constitute an undue limitation on the disclosure.
In the drawings:
fig. 1 is a schematic view of an upper mounting structure for connecting the upper part of a prefabricated staircase and an upper ladder beam according to embodiments 1 to 3 of the present invention.
Fig. 2 is a schematic view of a lower mounting structure for connecting the lower part of the prefabricated staircase and the lower ladder beam according to embodiments 1 and 4 of the present invention.
Fig. 3 is a schematic view of a lower mounting structure for connecting the lower part of the prefabricated staircase and the lower ladder beam according to embodiments 2 and 5 of the present invention.
Fig. 4 is a schematic view of a lower mounting structure for connecting the lower part of the prefabricated staircase and the lower ladder beam according to embodiments 3 and 6 of the present invention.
Fig. 5 is a schematic view of the direction a-a of fig. 4.
Fig. 6 is a schematic view of an upper mounting structure for connecting the upper part of the prefabricated staircase and the upper ladder beam according to embodiments 4 to 6 of the present invention.
Fig. 7 is a schematic view along the direction B-B of fig. 6.
Fig. 8 is a schematic view of the ladder beam of the present invention.
The relevant references in the above figures are:
100-going-up beam, 110-first plane, 120-second plane, 130-first facade, 200-going-down beam, 210-third plane, 220-fourth plane, 230-second facade, 310-first leveling layer, 320-first filling layer, 330-second filling layer, 340-first cement-based grouting filling layer, 350-first mortar filling layer, 360-flat plate, 410-second leveling layer, 420-third filling layer, 430-fourth filling layer, 440-second cement-based grouting filling layer, 450-second mortar filling layer, 460-elastomer filling layer, 470-L-shaped connecting plate, 480-bolt, 490-nut and 500-prefabricated staircase.
Detailed Description
The present invention will be described more fully with reference to the accompanying drawings. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Before the present invention is described with reference to the accompanying drawings, it is to be noted that:
the technical solutions and features provided in the present invention in each part including the following description may be combined with each other without conflict.
Moreover, references to embodiments of the invention in the following description are generally only to be considered as examples of the invention, and not as all embodiments. Therefore, all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention shall fall within the protection scope of the present invention.
With respect to the terms and units of the present invention. The terms "comprising," "having," and any variations thereof in the description and claims of this invention and the related sections are intended to cover non-exclusive inclusions.
Example 1
A method for installing a prefabricated staircase, wherein an upper portion of the prefabricated staircase 500 is connected to an upper sill 100, a lower portion of the prefabricated staircase 500 is connected to a lower sill 200, the upper sill 100 includes a first plane 110, a second plane 120 and a first elevation 130 connecting the first plane 110 and the second plane 120, the lower sill 200 includes a third plane 210, a fourth plane 220 and a second elevation 230 connecting the third plane 210 and the fourth plane 220, the method comprising the steps of:
(1) drawing elevation control lines on the side walls of the upper ladder beam 100 and the lower ladder beam 200; drawing an X-direction control line and a Y-direction control line on the first plane 110 and/or the third plane 210;
(2) leveling on the second plane 120 to form a first leveling layer 310; leveling on the fourth plane 220 to form a second leveling layer 410; controlling the thickness of the first screed 310 and the second screed 410 according to the elevation control line;
(3) brushing plain cement paste on the second leveling layer 410, and then laying two film protection layers, wherein the film protection layers are plastic films.
(4) Hoisting the prefabricated staircase 500, enabling the upper part of the prefabricated staircase 500 to fall on the first leveling layer 310 and the lower part of the prefabricated staircase 500 to fall on the second leveling layer 410, and controlling the falling position of the prefabricated staircase 500 according to the X-direction control line and the Y-direction control line;
(5) and (3) fixedly connecting the upper part of the prefabricated staircase 500 with the upper ladder beam 100: a protruding steel bar is arranged on the second plane 120 and inserted into a prefabricated hole on the prefabricated staircase 500; after the steel bar is inserted into the prefabricated hole, the steel bar is positioned in a gap between the steel bar and the wall of the prefabricated hole, the lower part of the gap is filled with cement-based grouting material, and the upper part of the gap is filled with mortar; then, filling a gap between the first vertical face 130 and the prefabricated staircase 500 by using cement-based grouting material, and filling the space above the first plane 110 according to the elevation control line;
finally, an upper mounting structure for connecting the upper portion of the prefabricated staircase 500 and the upper sill 100 as shown in fig. 1 is formed.
As shown in fig. 1, the upper installation structure includes a first leveling layer 310 between the second plane 120 and the prefabricated staircase 500, a first filling layer 320 between the first facade 130 and the prefabricated staircase 500, a second filling layer 330 filled above the first plane 110, and a first connection structure connecting the upper portion of the prefabricated staircase 500 and the upper ladder rail 100.
The first filling layer 320 is a cement-based grouting material layer; the second filling layer 330 is a mortar layer.
The first connecting structure comprises a steel bar protruding from the second plane 120 and a prefabricated hole for inserting the steel bar, wherein the prefabricated hole is formed in the prefabricated staircase 500; after the steel bars are inserted into the prefabricated holes, gaps between the steel bars and the walls of the prefabricated holes are formed, and the first connecting structure further comprises a first cement-based grouting material filling layer 340 filled at the lower parts of the gaps and a first mortar filling layer 350 filled at the upper parts of the gaps.
(6) Connecting the lower part of the prefabricated staircase 500 with the lower staircase beam 200: a protruding steel bar is arranged on the fourth plane 220, and the steel bar is inserted into a prefabricated hole on the prefabricated staircase 500; after the steel bar is inserted into the prefabricated hole, the steel bar is positioned in a gap between the steel bar and the wall of the prefabricated hole, the lower part of the gap is filled with cement-based grouting material, and the upper part of the gap is filled with mortar; and then, filling the gap between the second vertical surface 230 and the prefabricated staircase 500 by using cement-based grouting material, and filling the space above the third horizontal surface 210 according to the elevation control line.
Finally, a lower mounting structure for connecting the lower portion of the prefabricated staircase 500 and the lower sill 200 as shown in fig. 2 is formed.
As shown in fig. 2, the lower installation structure includes a second leveling layer 410 and a film protection layer between the third plane 210 and the prefabricated staircase 500, a third filling layer 420 between the second elevation 230 and the prefabricated staircase 500, a fourth filling layer 430 filled above the fourth plane 220, and a second connection structure connecting the lower portion of the prefabricated staircase 500 and the lower sill 200.
The third filling layer 420 is a cement-based grouting material layer; the fourth filling layer 430 is a mortar layer.
The second connecting structure comprises a steel bar protruding from the fourth plane 220, and a prefabricated hole formed in the prefabricated staircase 500 and used for inserting the steel bar; after the steel bars are inserted into the prefabricated holes, gaps between the steel bars and the walls of the prefabricated holes are formed, and the second connecting structure further comprises a second cement-based grouting material filling layer 440 filled at the lower part of the gaps and a second mortar filling layer 450 filled at the upper part of the gaps.
Example 2
A method for installing a prefabricated staircase, wherein an upper portion of the prefabricated staircase 500 is connected to an upper sill 100, a lower portion of the prefabricated staircase 500 is connected to a lower sill 200, the upper sill 100 includes a first plane 110, a second plane 120 and a first elevation 130 connecting the first plane 110 and the second plane 120, the lower sill 200 includes a third plane 210, a fourth plane 220 and a second elevation 230 connecting the third plane 210 and the fourth plane 220, the method comprising the steps of:
(1) drawing elevation control lines on the side walls of the upper ladder beam 100 and the lower ladder beam 200; drawing an X-direction control line and a Y-direction control line on the first plane 110 and/or the third plane 210;
(2) leveling on the second plane 120 to form a first leveling layer 310; and leveling on the fourth plane 220 to form a second leveling layer 410. Controlling the thickness of the first screed 310 and the second screed 410 according to the elevation control line;
(3) placing an elastomer, preferably a polystyrene plank, on the second screed 410
(4) Brushing plain cement paste on the second leveling layer 410, and then laying two film protection layers, wherein the film protection layers are plastic films.
(5) Hoisting the prefabricated staircase 500, enabling the upper part of the prefabricated staircase 500 to fall on the first leveling layer 310 and the lower part of the prefabricated staircase 500 to fall on the second leveling layer 410, and controlling the falling position of the prefabricated staircase 500 according to the X-direction control line and the Y-direction control line;
(6) and (3) fixedly connecting the upper part of the prefabricated staircase 500 with the upper ladder beam 100: as in example 1 and figure 1.
(7) Connecting the lower part of the prefabricated staircase 500 with the lower staircase beam 200: and filling a gap between the second vertical surface 230 and the prefabricated staircase 500 by using cement-based grouting material, and filling the space above the third plane 210 according to the elevation control line.
Finally, a lower mounting structure for connecting the lower portion of the prefabricated staircase 500 and the lower sill 200 as shown in fig. 3 is formed.
As shown in fig. 3, the lower installation structure includes a second leveling layer 410 between the third plane 210 and the prefabricated staircase 500 and a thin film protection layer, a third filling layer 420 between the second elevation 230 and the prefabricated staircase 500 and a fourth filling layer 430 filled above the fourth plane 220.
The third filling layer 420 is an elastomer filling layer 460; the fourth filling layer 430 is a mortar layer.
Example 3
A method for installing a prefabricated staircase, wherein an upper portion of the prefabricated staircase 500 is connected to an upper sill 100, a lower portion of the prefabricated staircase 500 is connected to a lower sill 200, the upper sill 100 includes a first plane 110, a second plane 120 and a first elevation 130 connecting the first plane 110 and the second plane 120, the lower sill 200 includes a third plane 210, a fourth plane 220 and a second elevation 230 connecting the third plane 210 and the fourth plane 220, the method comprising the steps of:
(1) drawing elevation control lines on the side walls of the upper ladder beam 100 and the lower ladder beam 200; drawing an X-direction control line and a Y-direction control line on the first plane 110 and/or the third plane 210;
(2) leveling on the second plane 120 to form a first leveling layer 310; and leveling on the fourth plane 220 to form a second leveling layer 410. Controlling the thickness of the first screed 310 and the second screed 410 according to the elevation control line;
(3) brushing plain cement paste on the second leveling layer 410, and then laying two film protection layers, wherein the film protection layers are plastic films.
(4) Hoisting the prefabricated staircase 500, enabling the upper part of the prefabricated staircase 500 to fall on the first leveling layer 310 and the lower part of the prefabricated staircase 500 to fall on the second leveling layer 410, and controlling the falling position of the prefabricated staircase 500 according to the X-direction control line and the Y-direction control line;
(5) and (3) fixedly connecting the upper part of the prefabricated staircase 500 with the upper ladder beam 100: as in example 1 and figure 1.
(6) Connecting the lower part of the prefabricated staircase 500 with the lower staircase beam 200: the bottom surface of the lower part of the prefabricated staircase 500 is connected with the side surface of the lower ladder beam 200 through a second connecting assembly, the second connecting assembly comprises an L-shaped connecting plate 470, two connecting surfaces of the L-shaped connecting plate 470 are respectively welded with a steel plate embedded in the bottom surface of the lower part of the prefabricated staircase 500 and a steel plate embedded in the side surface of the lower ladder beam 200, a through hole is formed in the connecting surface of the L-shaped connecting plate 470 and the lower ladder beam 200, and a steel bar and a bolt 480 embedded in the side surface of the lower ladder beam 200 penetrate through the through hole and then are fastened through a nut; and filling a gap between the second vertical surface 230 and the prefabricated staircase 500 by using cement-based grouting material, and filling the space above the third plane 210 according to the elevation control line.
Finally, a lower mounting structure for connecting the lower portion of the prefabricated staircase 500 and the lower sill 200 as shown in fig. 4 to 5 is formed.
As shown in fig. 4 to 5, the lower installation structure includes a second leveling layer 410 and a film protection layer between the third plane 210 and the prefabricated staircase 500, a third filling layer 420 between the second elevation 230 and the prefabricated staircase 500, a fourth filling layer 430 filled above the fourth plane 220, and a second connection structure connecting the lower portion of the prefabricated staircase 500 and the lower sill 200.
The third filling layer 420 is a cement-based grouting material layer; the fourth filling layer 430 is a mortar layer.
The second connecting structure is the second connecting assembly connecting the bottom surface of the lower part of the prefabricated staircase 500 and the side surface of the lower ladder beam 200. The number of the second connecting assemblies is 3.
Example 4
A method for installing a prefabricated staircase, wherein an upper portion of the prefabricated staircase 500 is connected to an upper sill 100, a lower portion of the prefabricated staircase 500 is connected to a lower sill 200, the upper sill 100 includes a first plane 110, a second plane 120 and a first elevation 130 connecting the first plane 110 and the second plane 120, the lower sill 200 includes a third plane 210, a fourth plane 220 and a second elevation 230 connecting the third plane 210 and the fourth plane 220, the method comprising the steps of:
(1) drawing elevation control lines on the side walls of the upper ladder beam 100 and the lower ladder beam 200; drawing an X-direction control line and a Y-direction control line on the first plane 110 and/or the third plane 210;
(2) leveling on the second plane 120 to form a first leveling layer 310; and leveling on the fourth plane 220 to form a second leveling layer 410. Controlling the thickness of the first screed 310 and the second screed 410 according to the elevation control line;
(3) brushing plain cement paste on the second leveling layer 410, and then laying two film protection layers, wherein the film protection layers are plastic films.
(4) Hoisting the prefabricated staircase 500, enabling the upper part of the prefabricated staircase 500 to fall on the first leveling layer 310 and the lower part of the prefabricated staircase 500 to fall on the second leveling layer 410, and controlling the falling position of the prefabricated staircase 500 according to the X-direction control line and the Y-direction control line;
(5) and (3) fixedly connecting the upper part of the prefabricated staircase 500 with the upper ladder beam 100: the upper part of the prefabricated staircase 500 is provided with a mounting surface matched with the bottom surface of the upper ladder beam 100, and the bottom surface is connected with the mounting surface through a first connecting component; the first connecting assembly comprises a flat plate 360, two ends of which are respectively welded with the steel plate embedded in the mounting surface and the steel plate embedded in the bottom surface of the upper ladder beam 100; after the flat plate 360 is welded, plastering treatment is carried out on a gap between the bottom surface and the mounting surface; then, filling a gap between the first vertical face 130 and the prefabricated staircase 500 by using cement-based grouting material, and filling the space above the first plane 110 according to the elevation control line;
finally, the upper installation structure for connecting the upper part of the prefabricated staircase 500 and the upper ladder beam 100 as shown in fig. 6 to 7 is formed.
As shown in fig. 6 to 7, the upper installation structure includes a first leveling layer 310 between the second plane 120 and the prefabricated staircase 500, a first filling layer 320 between the first elevation 130 and the prefabricated staircase 500, a second filling layer 330 filled above the first plane 110, and a first connection structure connecting the upper portion of the prefabricated staircase 500 and the upper ladder rail 100.
The first filling layer 320 is a cement-based grouting material layer; the second filling layer 330 is a mortar layer.
The upper part of the prefabricated staircase 500 is provided with a mounting surface matched with the bottom surface of the upper ladder beam 100, and the first connecting structure is the first connecting assembly for connecting the bottom surface and the mounting surface. The number of the first connecting assemblies is two.
(6) Connecting the lower part of the prefabricated staircase 500 with the lower staircase beam 200: as in example 1 and figure 2.
Example 5
A method for installing a prefabricated staircase, wherein an upper portion of the prefabricated staircase 500 is connected to an upper sill 100, a lower portion of the prefabricated staircase 500 is connected to a lower sill 200, the upper sill 100 includes a first plane 110, a second plane 120 and a first elevation 130 connecting the first plane 110 and the second plane 120, the lower sill 200 includes a third plane 210, a fourth plane 220 and a second elevation 230 connecting the third plane 210 and the fourth plane 220, the method comprising the steps of:
(1) drawing elevation control lines on the side walls of the upper ladder beam 100 and the lower ladder beam 200; drawing an X-direction control line and a Y-direction control line on the first plane 110 and/or the third plane 210;
(2) leveling on the second plane 120 to form a first leveling layer 310; and leveling on the fourth plane 220 to form a second leveling layer 410. Controlling the thickness of the first screed 310 and the second screed 410 according to the elevation control line;
(3) placing an elastomer, preferably a polystyrene plank, on the second screed 410
(4) Brushing plain cement paste on the second leveling layer 410, and then laying two film protection layers, wherein the film protection layers are plastic films.
(5) Hoisting the prefabricated staircase 500, enabling the upper part of the prefabricated staircase 500 to fall on the first leveling layer 310 and the lower part of the prefabricated staircase 500 to fall on the second leveling layer 410, and controlling the falling position of the prefabricated staircase 500 according to the X-direction control line and the Y-direction control line;
(6) and (3) fixedly connecting the upper part of the prefabricated staircase 500 with the upper ladder beam 100: as in example 4 and shown in fig. 6-7.
(7) Connecting the lower part of the prefabricated staircase 500 with the lower staircase beam 200: as in example 2 and figure 3.
Example 6
A method for installing a prefabricated staircase, wherein an upper portion of the prefabricated staircase 500 is connected to an upper sill 100, a lower portion of the prefabricated staircase 500 is connected to a lower sill 200, the upper sill 100 includes a first plane 110, a second plane 120 and a first elevation 130 connecting the first plane 110 and the second plane 120, the lower sill 200 includes a third plane 210, a fourth plane 220 and a second elevation 230 connecting the third plane 210 and the fourth plane 220, the method comprising the steps of:
(1) drawing elevation control lines on the side walls of the upper ladder beam 100 and the lower ladder beam 200; drawing an X-direction control line and a Y-direction control line on the first plane 110 and/or the third plane 210;
(2) leveling on the second plane 120 to form a first leveling layer 310; and leveling on the fourth plane 220 to form a second leveling layer 410. Controlling the thickness of the first screed 310 and the second screed 410 according to the elevation control line;
(3) brushing plain cement paste on the second leveling layer 410, and then laying two film protection layers, wherein the film protection layers are plastic films.
(4) Hoisting the prefabricated staircase 500, enabling the upper part of the prefabricated staircase 500 to fall on the first leveling layer 310 and the lower part of the prefabricated staircase 500 to fall on the second leveling layer 410, and controlling the falling position of the prefabricated staircase 500 according to the X-direction control line and the Y-direction control line;
(5) and (3) fixedly connecting the upper part of the prefabricated staircase 500 with the upper ladder beam 100: as in example 4 and shown in fig. 6-7.
(6) Connecting the lower part of the prefabricated staircase 500 with the lower staircase beam 200: as in example 3 and fig. 4-5.
As shown in fig. 8, the utility model discloses the butt joint department of well ascending and descending stair adopts usually to answer the ladder beam, and the one side that answers the ladder beam is connected with lower floor's prefabricated staircase 500 as ascending roof beam 100, and the opposite side is connected with upper prefabricated staircase 500 as descending roof beam 200, adopts the utility model discloses a prefabricated staircase's mounting method and mounting structure can ensure that in every answers the ladder beam, the mounting height of lower floor's prefabricated staircase on second plane 120 cooperatees with the mounting height of upper prefabricated staircase 500 on fourth plane 220. In fig. 8, "X" denotes an X-direction control line, and "Y" denotes a Y-direction control line.
The contents of the present invention have been explained above. Those of ordinary skill in the art will be able to implement the invention based on these descriptions. Based on the above-mentioned contents of the present invention, all other embodiments obtained by those skilled in the art without creative efforts shall fall within the protection scope of the present invention.
Claims (10)
1. A mounting structure of a prefabricated staircase, the mounting structure including an upper mounting structure connecting an upper portion of the prefabricated staircase (500) with an upper sill (100) and a lower mounting structure connecting a lower portion of the prefabricated staircase (500) with a lower sill (200), the upper sill (100) including a first plane (110), a second plane (120) and a first vertical face (130) connecting the first plane (110) and the second plane (120), the lower sill (200) including a third plane (210), a fourth plane (220) and a second vertical face (230) connecting the third plane (210) and the fourth plane (220), characterized in that:
the upper mounting structure comprises a first leveling layer (310) between the second plane (120) and the prefabricated staircase (500), a first filling layer (320) between the first vertical surface (130) and the prefabricated staircase (500), a second filling layer (330) filled above the first plane (110) and a first connecting structure for connecting the upper part of the prefabricated staircase (500) and the upper ladder beam (100);
the lower installation structure comprises a second leveling layer (410) between the fourth plane (220) and the prefabricated staircase (500), a third filling layer (420) between the second vertical surface (230) and the prefabricated staircase (500) and a fourth filling layer (430) filled above the third plane (210).
2. The prefabricated staircase installation structure of claim 1, wherein: the first filling layer (320) is a cement-based grouting material layer; the second filling layer (330) is a mortar layer.
3. The prefabricated staircase installation structure of claim 1, wherein: the first connecting structure comprises steel bars protruding from the second plane (120) and prefabricated holes which are formed in the prefabricated staircase (500) and used for inserting the steel bars; after the steel bars are inserted into the prefabricated holes, gaps between the steel bars and the walls of the prefabricated holes are formed, and the first connecting structure further comprises a first cement-based grouting material filling layer (340) filled at the lower parts of the gaps and a first mortar filling layer (350) filled at the upper parts of the gaps.
4. The prefabricated staircase installation structure of claim 1, wherein: the prefabricated staircase (500) upper portion has the installation face with go up ladder beam (100) bottom surface cooperation, first connection structure is for connecting go up ladder beam (100) bottom surface and the first connecting elements of installation face.
5. The prefabricated staircase installation structure of claim 4, wherein: the first connecting component comprises a flat plate (360) with two ends respectively welded with the steel plate embedded in the mounting surface and the steel plate embedded in the bottom surface of the upper ladder beam (100).
6. The prefabricated staircase installation structure of claim 1, wherein: a thin film protective layer is paved on the contact surface of the second leveling layer (410) and the prefabricated staircase (500); the third filling layer (420) is a cement-based grouting layer, or the third filling layer (420) is an elastomer filling layer (460); the fourth filling layer (430) is a mortar layer.
7. The prefabricated staircase installation structure of claim 1, wherein: the lower mounting structure further comprises a second connecting structure connecting the lower part of the prefabricated staircase (500) and the lower ladder beam (200).
8. The prefabricated staircase installation structure of claim 7, wherein: the second connecting structure comprises a steel bar protruding from the fourth plane (220) and a prefabricated hole which is arranged on the prefabricated staircase (500) and used for inserting the steel bar; and after the steel bars are inserted into the prefabricated holes, gaps between the steel bars and the walls of the prefabricated holes are formed, and the second connecting structure further comprises a second cement-based grouting material filling layer (440) filled at the lower parts of the gaps and a second mortar filling layer (450) filled at the upper parts of the gaps.
9. The prefabricated staircase installation structure of claim 7, wherein: the second connecting structure is a second connecting assembly for connecting the bottom surface of the lower part of the prefabricated staircase (500) and the side surface of the lower ladder beam (200).
10. The prefabricated staircase installation structure of claim 9, wherein: the second connecting assembly comprises an L-shaped connecting plate (470) and a nut (490), two connecting surfaces of the L-shaped connecting plate (470) are welded with a steel plate buried in the bottom surface of the lower portion of the prefabricated staircase (500) and a steel plate buried in the side surface of the lower ladder beam (200) respectively, a through hole is formed in the connecting surface of the L-shaped connecting plate (470) and the lower ladder beam (200), and a steel bar and a bolt (480) buried in the side surface of the lower ladder beam (200) penetrate through the through hole and then are fastened through the nut (490).
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| CN113026959A (en) * | 2019-12-24 | 2021-06-25 | 成都建工第二建筑工程有限公司 | Installation method of prefabricated staircase |
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