Method for installing the upper support end of the staircase using concrete staircase platform beams

Abstract

The invention discloses a method for installing the upper support end of a staircase section by using a concrete staircase platform beam, and belongs to the field of civil engineering technology. The invention provides a local lug on the side of the beam, an end lug notch, and a middle lug notch on the staircase beam, and inserts the bottom side rib beam on the upper end of the precast concrete beam staircase section on the side of the end of the staircase beam into the end lug notch, and inserts the bottom side rib beam on the upper end of the precast concrete beam staircase section on the side of the middle of the staircase beam into the middle lug notch, and the end cross beam on the upper end of the precast concrete beam staircase section is located on the local lug on the side of the beam, so that the connection and installation holes on the precast concrete beam staircase section and the staircase beam correspond to each other and are connected. The precast concrete beam staircase section can be conveniently installed at the support, which simplifies the manufacturing and installation process of the precast concrete beam staircase section, and can give full play to the advantages of the precast concrete beam staircase in terms of material saving, weight reduction, consumption reduction, and efficiency improvement.

Description

Technical Field

[0001] The present invention belongs to the field of civil engineering technology, and relates to prefabricated buildings, and in particular to a concrete staircase platform beam, and a method for installing a support end of a prefabricated concrete beam staircase segment using the concrete staircase platform beam. Background Art

[0002] Prefabricated concrete stairs are heavy and require a lot of materials. For a long time, civil engineering technicians have always tried to save materials and reduce weight for concrete stairs. The current common practice is to use the technical solution of concrete beam stairs. The technical solution of concrete beam stairs is usually to set up lower reverse rib beams on both sides of the staircase. Since the rib beams are lower than the staircase beam ears at the upper end of the staircase, the rib beams cannot be inserted into the supports, making them impossible to install. If the height of the staircase beam at the support is increased, it will not be cost-effective.

[0003] Ningbo Standard Design Atlas "Light Precast Concrete Stairs", Atlas No.: 2015YongJ-02, adopts the method of lengthening the staircase section or reducing the height of the staircase beam at the support end, which either causes waste or reduces the safety performance of the staircase structure. Therefore, a new technical solution is urgently needed in the existing technology to solve this problem. Summary of the invention

[0004] The technical problem to be solved by the present invention is: a method of installing the upper support end of a stair section by using a concrete stair platform beam can give full play to the excellent economy of precast concrete beam-type stairs, while making the installation of precast concrete stair sections convenient and quick.

[0005] A concrete staircase platform beam, characterized in that it includes a staircase beam, a local ear on the beam side, an end ear notch and a middle ear notch, the staircase beam is a cast-in-place staircase beam or a prefabricated assembled staircase beam, the staircase beam is provided with a local ear on the beam side on one side of the upper end of the precast concrete beam staircase section, the end ear notch is provided at the staircase beam support end, and the middle ear notch is provided at the mid-span of the staircase beam; the end ear notch corresponds to the installation position of the side rib beam end at the upper end of the precast concrete beam staircase section at the end of the staircase beam, and the size along the length direction of the staircase beam is greater than the width of the side rib beam at the support of the precast concrete beam staircase section; the middle ear notch corresponds to the installation position of the side rib beam end at the upper end of the precast concrete beam staircase section at the middle of the staircase beam, and the size along the length direction of the staircase beam is greater than the width of the side rib beam at the support of the precast concrete beam staircase section.

[0006] A method for installing the upper support end of an assembled concrete beam staircase segment is characterized by: using the concrete staircase platform beam, comprising the following steps, and the following steps are performed in sequence:

[0007] Step 1: Prepare precast concrete beam staircase

[0008] Prefabricating the precast concrete beam staircase segments, including the end cross beams and the side rib beams, by conventional methods;

[0009] Step 2: Prepare the concrete staircase platform beam

[0010] The concrete staircase platform beam is constructed by cast-in-place or prefabricated assembly. The staircase beam is provided with a partial beam side ear, an end ear notch and a middle ear notch on the side that receives the upper end of the precast concrete beam staircase segment; the partial beam side ear is arranged on the side of the staircase beam that receives the upper end of the precast concrete beam staircase segment, the partial beam side ear is provided with an end ear notch at the end of the staircase beam, and a middle ear notch is provided at the mid-span of the staircase beam; the end ear notch corresponds to the installation position of the end of the side rib beam at the upper end of the precast concrete beam staircase segment at the end of the staircase beam, and the dimension along the length direction of the staircase beam is greater than the width of the side rib beam at the support of the precast concrete beam staircase segment; the middle ear notch corresponds to the installation position of the end of the side rib beam at the upper end of the precast concrete beam staircase segment at the middle of the staircase beam, and the dimension along the length direction of the staircase beam is greater than the width of the side rib beam at the support of the precast concrete beam staircase segment;

[0011] Step 3: Install precast concrete beam staircase

[0012] The local lug on the side of the concrete staircase platform beam built in step 2 is used as the mounting support of the upper support end of the precast concrete beam-type staircase segment, and the precast concrete beam-type staircase segment is placed at its work station, and the bottom side rib beam corresponding to the end of the staircase beam at the upper end of the precast concrete beam-type staircase segment is inserted into the end lug notch, and the bottom side rib beam corresponding to the middle of the staircase beam at the upper end of the precast concrete beam-type staircase segment is inserted into the middle lug notch, and the end crossbeam at the upper end of the precast concrete beam-type staircase segment is seated on the local lug on the side of the beam, so that the connection and mounting holes on the precast concrete beam-type staircase segment and the staircase beam correspond to each other and are connected;

[0013] At this point, a method for installing the upper support end of an assembled concrete beam staircase segment is completed.

[0014] Through the above-mentioned design scheme, the present invention can bring the following beneficial effects: a method for installing the upper support end of the staircase section by using a concrete staircase platform beam, by setting a local ear on the beam side, an end ear notch, and a middle ear notch on the staircase beam, the bottom side rib beam on the upper end of the precast concrete beam staircase section on the side of the end of the staircase beam is inserted into the end ear notch, the bottom side rib beam on the upper end of the precast concrete beam staircase section on the side of the middle of the staircase beam is inserted into the middle ear notch, and the end cross beam on the upper end of the precast concrete beam staircase section is located on the local ear on the beam side, so that the connection and installation holes on the precast concrete beam staircase section and the staircase beam correspond to each other and are connected. The precast concrete beam staircase section can be easily installed at the support, which simplifies the production and installation process of the precast concrete beam staircase section, and can give full play to the advantages of the precast concrete beam staircase in terms of material saving, weight reduction, consumption reduction, and efficiency improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below with reference to the accompanying drawings and specific embodiments:

[0016] Figure 1 It is a schematic plan view of the precast concrete beam type staircase section of the present invention.

[0017] Figure 2 It is a schematic diagram of the middle longitudinal section of the precast concrete beam type staircase section of the present invention.

[0018] Figure 3 It is a schematic longitudinal section diagram of the rib beam of the precast concrete beam type staircase section of the present invention.

[0019] Figure 4 It is a schematic longitudinal section diagram of the end cross beam at the upper end of the precast concrete beam type staircase section of the present invention.

[0020] Figure 5 It is a schematic diagram of the AA section of the precast concrete beam type staircase section of the present invention.

[0021] Figure 6 It is a schematic cross-sectional view of the precast concrete beam-type staircase section BB of the present invention.

[0022] Figure 7 It is a plan view of the concrete staircase platform beam of the present invention.

[0023] Figure 8 It is a front view schematic diagram of the concrete staircase platform beam of the present invention.

[0024] Fig. 9 The present invention is a cross-sectional schematic diagram of a concrete staircase platform beam provided with a local cantilever section on the beam side.

[0025] Fig.10 The present invention is a cross-sectional schematic diagram of a concrete staircase platform beam provided with end ear notches and a middle ear notch section.

[0026] Fig.11 It is a schematic plan view of the installation of the precast concrete beam type staircase section of the present invention.

[0027] Fig.12 It is a cross-sectional schematic diagram of the installation of the precast concrete beam type staircase section of the present invention.

[0028] Fig.13 It is a CC cross-sectional schematic diagram of the installation relationship between the precast concrete beam-type staircase section and the concrete staircase platform beam of the present invention.

[0029] In the figure, 1-precast concrete beam type staircase section, 2-end cross beam, 3-side rib beam, 4-staircase beam, 5-partial cantilever on the beam side, 6-end cantilever notch, 7-middle cantilever notch. DETAILED DESCRIPTION

[0030] A method for installing the upper support end of a prefabricated concrete beam staircase, such as Figures 1 to 13 As shown, the feature is that: a concrete staircase platform beam is used, wherein the concrete staircase platform beam is as follows Figure 7 to Figure 10 The method comprises the following steps, and the following steps are performed in sequence:

[0031] Step 1: Prepare precast concrete beam staircase

[0032] like Figure 1 to Figure 6 As shown, a precast concrete beam-type staircase section 1 is prepared by conventional methods, including an end cross beam 2 and a side rib beam 3;

[0033] Step 2: Prepare the concrete staircase platform beam

[0034] like Figure 7 to Figure 10As shown, the concrete staircase platform beam is constructed by cast-in-place or prefabricated assembly. The staircase beam 4 is provided with a beam side partial ear 5 section, an end ear notch 6 and a middle ear notch 7 on the side that receives the upper end of the precast concrete beam staircase section 1; the beam side partial ear 5 is arranged on the side where the staircase beam 4 receives the upper end of the precast concrete beam staircase section 1, the beam side partial ear 5 is not arranged through the length, an end ear notch 6 is arranged on one side of the end of the staircase beam 4, and a middle ear notch 7 is arranged on the side near the middle of the staircase beam 4; the end ear notch 6 is arranged on the side where the staircase beam 4 receives the upper end of the precast concrete beam staircase section 1 The end of the side corresponds to the installation position of the end of the side rib beam 3 at the upper end of the precast concrete beam staircase 1 at the end of the stair beam 4, and the size along the length direction of the stair beam 4 is greater than the width of the side rib beam 3 at the support of the precast concrete beam staircase 1; the middle ear notch 7 is set in the middle of the side of the stair beam 4 receiving the upper end of the precast concrete beam staircase 1, corresponding to the installation position of the end of the side rib beam 3 at the upper end of the precast concrete beam staircase 1 at the middle of the stair beam 4, and the size along the length direction of the stair beam 4 is greater than the width of the side rib beam 3 at the support of the precast concrete beam staircase 1;

[0035] Step 3: Install precast concrete beam staircase

[0036] like Figure 11 to Figure 13 As shown, the local lug 5 of the concrete staircase platform beam is used as the mounting support of the upper support end of the precast concrete beam staircase section 1, and the precast concrete beam staircase section 1 is placed at its work station, and the bottom side rib beam 3 of the upper end of the precast concrete beam staircase section 1 on the side of the end of the staircase beam 4 is inserted into the end lug notch 6, and the bottom side rib beam 3 of the upper end of the precast concrete beam staircase section 1 on the side of the middle of the staircase beam 4 is inserted into the middle lug notch 7, and the end cross beam 2 of the upper end of the precast concrete beam staircase section 1 is seated on the local lug 5 of the beam side, so that the connection and installation holes on the precast concrete beam staircase section 1 and the staircase beam 4 correspond to each other and are connected;

[0037] At this point, a method for installing the upper support end of an assembled concrete beam staircase segment is completed.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for installing a support end on a staircase section by using a concrete staircase platform beam, comprising a staircase beam (4), a local ear (5) on the side of the beam, an end ear notch (6) and a middle ear notch (7), wherein the staircase beam (4) is a cast-in-place staircase beam or a prefabricated assembled staircase beam, and a local ear (5) on the side of the staircase beam (4) is provided at one side of the upper end of the prefabricated concrete beam staircase section (1), an end ear notch (6) is provided at the support end of the staircase beam (4), and a middle ear notch (7) is provided at the mid-span of the staircase beam (4); the end ear notch The opening (6) corresponds to the installation position of the end of the side rib beam (3) at the upper end of the precast concrete beam staircase section (1) at the end of the staircase beam (4), and the size along the length direction of the staircase beam (4) is greater than the width of the side rib beam (3) at the support of the precast concrete beam staircase section (1); the middle ear notch (7) corresponds to the installation position of the end of the side rib beam (3) at the upper end of the precast concrete beam staircase section (1) at the middle of the staircase beam (4), and the size along the length direction of the staircase beam (4) is greater than the width of the side rib beam (3) at the support of the precast concrete beam staircase section (1); Its characteristics are: The method comprises the following steps, and the following steps are performed in sequence: Step 1: Prepare precast concrete beam staircase A precast concrete beam-type staircase section (1) is prepared by conventional methods, comprising an end cross beam (2) and a side rib beam (3); Step 2: Prepare the concrete staircase platform beam A concrete staircase platform beam is constructed by cast-in-place or prefabricated assembly. The staircase beam (4) is provided with a beam side partial lug (5), an end lug notch (6) and a middle lug notch (7) on the side receiving the upper end of a prefabricated concrete beam staircase section (1); the beam side partial lug (5) is arranged on the side of the staircase beam (4) receiving the upper end of the prefabricated concrete beam staircase section (1), the beam side partial lug (5) is provided with an end lug notch (6) at the end of the staircase beam (4), and the staircase beam (4) is provided with a middle lug notch (7) at the mid-span; the end lug notch (6) and the middle lug notch (7) are provided at the middle of the staircase beam (4); The end of the side rib beam (3) at the upper end of the precast concrete beam staircase section (1) corresponds to the installation position of the end of the staircase beam (4), and the dimension along the length direction of the staircase beam (4) is greater than the width of the side rib beam (3) at the support of the precast concrete beam staircase section (1); the middle ear notch (7) corresponds to the installation position of the end of the side rib beam (3) at the upper end of the precast concrete beam staircase section (1) in the middle of the staircase beam (4), and the dimension along the length direction of the staircase beam (4) is greater than the width of the side rib beam (3) at the support of the precast concrete beam staircase section (1); Step 3: Install precast concrete beam staircase The local lug (5) on the side of the concrete staircase platform beam constructed in step 2 is used as the mounting support of the upper support end of the precast concrete beam-type staircase section (1), and the precast concrete beam-type staircase section (1) is placed at its work station. The bottom side rib beam (3) at the upper end of the precast concrete beam-type staircase section (1) corresponding to the end of the staircase beam (4) is inserted into the end lug notch (6), and the bottom side rib beam (3) at the upper end of the precast concrete beam-type staircase section (1) corresponding to the middle of the staircase beam (4) is inserted into the middle lug notch (7). The end cross beam (2) at the upper end of the precast concrete beam-type staircase section (1) is seated on the local lug (5) on the side of the beam, so that the connection and mounting holes on the precast concrete beam-type staircase section (1) and the staircase beam (4) correspond to each other and are connected; At this point, a method for installing the upper support end of an assembled concrete beam staircase segment is completed.

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