JP2016011539A - Stair installation method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a stair installation method capable of precedently installing regular stairs in an easily usable state as a vertical traffic line over a plurality of stories to a building under construction, and capable of easily coping even with the regular stairs of various structural forms.SOLUTION: A temporary frame material 3 is extended over between upper-lower landings 2 and 2 formed in a building under construction, and regular stairs 1 are installed between the landings 2 and 2 in a state of being supported by this temporary frame material 3.

Description

  The present invention relates to a staircase installation method for installing a main staircase in a building under construction.

  When constructing a building, a stairway for construction as a vertical flow line for workers is required. As for the construction stairs, it is common to install a temporary staircase. However, by installing the main staircase in advance of the construction stairs, it is not necessary to install and remove the temporary staircase. In addition, the construction is also simplified.

  In this way, the technology for pre-installing the main staircase in the building under construction is to install both ends of the existing main staircase in the staircase length direction at the both ends of the staircase directly below the staircase. What supports from a part is known (refer the following patent document 1).

JP-A-4-309651

  However, in the above conventional staircase installation method, a temporary support column as a temporary support material exists in a standing state on the stairs directly below the main stairs, so that this temporary support column interferes with the use of the stairs directly below, There is a disadvantage that it becomes difficult to use as a vertical flow line across the floor.

  In addition, in this conventional staircase installation method, for example, when the main staircase is a suspension structure type that is installed in a state where the middle of the staircase length direction is supported by a suspension from the building frame on the upper floor side, If it does not wait until the original upper-floor building frame is completed, it cannot be installed safely. Therefore, in such a case, there is an inconvenience that the installation is delayed as a construction stairs.

  As a countermeasure, a temporary support that supports the middle part of the staircase length direction is erected in the middle part of the staircase length direction of the main staircase just prior to the completion of the building structure on the upper floor that will be suspended. Although it may be added in a state, if this is done, the added temporary support becomes a further hindrance to the use of the stairs directly below, and the use as a vertical flow line across a plurality of floors becomes more difficult.

  In view of this situation, the main problem of the present invention is that the main staircase can be installed in advance in a state where it can be easily used as a vertical flow line extending over a plurality of floors with respect to the building under construction. The present invention is to provide a staircase installation method that can easily cope with main staircases of various structural types.

  The first characteristic configuration of the present invention is that the temporary construction material is extended between the upper and lower landings formed in the building under construction, and the temporary stairs are installed between the landings in a state of being temporarily supported by the temporary construction material. There is in point to do.

  In other words, according to this configuration, since the temporary support material that temporarily supports the stairs for main construction is a temporary support material spanned between the landings, the temporary support material is a temporary support material as in the case of the temporary support column. Can occupy a part of the stairs directly below and obstruct traffic.

  Therefore, the main stairs can be pre-installed in a state that is easy to use as a vertical flow line extending over a plurality of floors with respect to the building under construction.

  Moreover, since the temporary support material as the temporary support material is installed between the landings, that is, in a state having at least the length of the staircase, the temporary installation material can be used in the staircase length direction of the main stairs. It is possible to easily realize support at an appropriate position in a state that does not hinder the passage of the stairs immediately below.

  Accordingly, it is possible to easily cope with a stairs for main installation such as a suspension structure type that requires support of an intermediate portion in the stairs length direction before the main installation.

  The 2nd characteristic structure of this invention exists in the point which arrange | positions the said temporary building material in the downward direction or the side of the said permanent stairs.

  In other words, according to this configuration, in the state where the temporary stairs are temporarily supported by the temporary building material, the temporary building material may occupy a part of the space immediately above the temporary building stairs and hinder traffic. Since this can be avoided, the main stairs can be installed in advance in a state where it is easier to use as a vertical flow line extending over a plurality of floors with respect to the building under construction.

Perspective view of the main part of the building under construction Diagram showing how to install stairs Diagram showing how to install stairs Diagram showing how to install stairs

  FIG. 1 shows a state in which the main staircase 1 is installed in advance (installed prior to the main installation) at the staircase installation location S of the building under construction, 2 is a landing formed at the staircase installation location S, 3 is up and down It is a temporary frame as a temporary support material extended between the landings 2 and 2.

  In the present staircase installation method, the vertical flow line at the construction site (in the construction site) is preliminarily installed in such a state that the temporary staircase 1 is temporarily supported by the temporary construction material 3 extending between the upper and lower landings 2 and 2. In other words, the main stairs 1 can be used as the construction stairs.

  In the present example, the upper and lower landings 2 and 2 are not dedicated to temporary installations that will be removed later, but are composed of permanent landings. Both landings 2 and 2 are made of steel, concrete, or the like. Although not shown, for example, in FIG. 1, the landing 2 on the uppermost floor side is temporarily installed in a state where a framework scaffolding or a column as a temporary support member is supported, and the remaining landing 2 is formed by fasteners or welding. It is installed in the building in a state where it is integrated with the building under construction by joining the members using a filler or the like, or by integrally molding with concrete. In addition, what is necessary is just to select the installation method of the landing 2 suitably according to the condition of the field.

  As the main stairs 1, a ready-made one in which an iron sheathing girder portion 1 </ b> A, a kick-up plate portion 1 </ b> B, and a tread plate portion 1 </ b> C are integrally configured in advance by welding, a fixture, or the like is used. As shown in FIG. 4, the main staircase 1 is a main staircase in a state where at least a plurality of locations in the staircase length direction including a middle portion in the staircase length direction are supported from the upper floor side by hanging tools 4 such as rods and wires. It is configured as a suspended staircase with a suspended structure.

  In addition, as the stairs 1 for main installation, the thing made from a precast concrete etc. may be sufficient, for example, the thing other than a suspension structure type etc. may be sufficient as the structure type of construction.

  As shown in FIG. 4, the hanger 4 has a lower end portion that is connected to a piece 1 b (see FIG. 1) that protrudes at a plurality of locations in the staircase length direction of the right and left slats 1 </ b> A of the main stairs 1. ) And the upper end portion is fixed to a building frame such as a beam (not shown), thereby supporting a plurality of locations in the staircase length direction of the main staircase 1.

  On the left and right sides of both ends of the main staircase 1 in the staircase length direction, mounting pieces (attaching portions of the mounting portion) fixed to the mounted portions 2a provided on the left and right sides of the front end portion (step side portion) of the landing 2 are provided. An example) 1a is projected.

  And by fixing each attachment piece 1a of the staircase 1 for main installation and each attachment part 2a of both landings 2 with fasteners, such as a volt | bolt and a nut, and joining means, such as welding, both can be carried out from the stage before main installation. The landings 2 and 2 and the main stairs 1 are connected to each other.

  As shown in FIG. 1, the temporary frame 3 is a temporary support material that temporarily supports the main staircase 1 in a state where it can be used by an operator in a stage prior to the main installation. It is made of a rigid material such as a square pipe or a grooved steel that is slightly longer than the dimensions.

  As shown in FIGS. 1 and 3, the temporary construction material 3 is constructed across the lower ends of both landings 2 and 2 in a state of being located below the main stairs 1. Therefore, it is reliably avoided that the temporary frame 3 occupies the space immediately above the main stairs 1 and hinders passage.

  Further, as shown in FIG. 2 and FIG. 3, the temporary frame 3 has its upper surface line L <b> 3 kicked up at the lower end line L <b> 1 of the main stairs 1 (in this example, arranged at a constant pitch in the stairs length direction). It is constructed between the landings 2 and 2 in a posture that coincides with the position at the time of installation of the line portion connecting the back surface corners of the plate part A2 and the stepping plate part A3, and supports the main stairs 1 over its entire length. It is configured.

  Further, the temporary construction material 3 is installed at two left and right positions shifted slightly from the both ends (left and right ends) of the staircase width direction, and supports the main stairs 1 at a plurality of locations dispersed in the staircase width direction. It is configured as follows.

  That is, in the present staircase installation method, by adopting such a temporary support structure by the temporary construction material 3, the state before the main installation (that is, before the building housing on the upper floor side is completed and supported by the hanging tool 4). In this state, the staircase 1 for permanent installation, which is insufficient in strength, is stably supported over the entire length and width, and, for example, a staircase structure composed of divided members divided into a plurality of portions in the direction of the staircase length. It can be applied to stairs of various structures such as.

  At both ends in the length direction of the temporary frame member 3, attachment portions 3 a for the attachment pieces 2 b protruding from the bottom surface portions 2 B of the landings 2 and 2 are formed by bending. Then, by temporarily fixing the mounting piece 2b of the landing 2 and the mounting portion 3a of the temporary frame 3 with a fastener such as a bolt or a nut or a joining means such as welding, a temporary rack is installed between the upper and lower landings 2 and 2. Material 3 is erected.

  In this way, the temporary bridge 3 is directly fixed to the upper and lower landings 2 and 2 without using any other vertical support member, so that the passage portion directly below the main stairs 1 can be moved in another vertical direction. It is also avoided that the support member occupies and obstructs traffic.

  Next, each process of installing the main stairs 1 in a building under construction will be described.

(A) Prior installation process (temporary process) of stairs 1 for main installation
First, as shown in FIG. 2, the length of a pair of left and right temporary frames 3 for each attached piece 2 b of the bottom part 2 B of the upper and lower landings 2, 2 formed at the staircase installation location S of the building under construction. The attachment parts 3a at both ends in the vertical direction are attached, and the temporary frame 3 is placed between the upper and lower landings 2 and 2.

  Next, as shown in FIG. 3, the main stairs 1 are arranged between the upper and lower landings 2, 2 in a state of being placed on the upper surface of the temporary frame 3, and the front ends of the upper and lower landings 2, 2 are arranged. Attaching each mounting piece 1a at both ends of the main staircase 1 in the lengthwise direction of the main staircase 1a to each mounted portion 2a, and temporarily supporting the main staircase 1 on the temporary frame 3, between the upper and lower landings 2 and 2 To be installed. The preceding installation of the main stairs 1 is completed through the above steps.

  Depending on the situation of the construction site, the main stairs 1 and the temporary frame 3 are pre-assembled, and the assembly of the main stairs 1 and the temporary frame 3 are attached to the upper and lower landings 2 and 2 at the same time. May be.

(B) Main installation step of the main staircase 1 (transition step from the temporary state to the main installation state)
After the building floor on the upper floor from which the main staircase 1 is suspended is completed, as shown in FIG. 4, the lower end of the hanger 4 is connected to the connected piece 1b (see FIG. 1) of the main staircase 1. The upper part of the hanging tool 4 is fixed to the building frame on the upper floor side, and a plurality of locations in the staircase length direction of the main stairs 1 in the temporary state are supported by the hanging tool 4.

  Thereafter, the temporary frame 3 is removed, and the attached pieces 2b of the bottom surface portions 2B of the upper and lower landings 2 and 2 are cut and removed (an example of separation and removal) by a cutting means such as a wire saw. The main installation of the main stairs 1 is completed through the above steps.

  In other words, in this permanent installation process, the supporting force for the permanent stairs 1 can be secured by the hanger 4 prior to the removal of the temporary building material 3, and the bottom surfaces of the upper and lower landings 2 after the temporary building material 3 is removed. By removing the attached piece 2b of the part 2B, the bottom surfaces of the upper and lower landings 2 and 2 can be finished beautifully.

[Other Embodiments]
(1) In the above-described embodiment, the landing for the main installation is shown as an example of the landing 2 formed in the building under construction, but it may be a temporary landing dedicated to be removed later.

  (2) In the above-described embodiment, the case where the temporary frame 3 is made of a rigid material such as a square pipe or a profile has been described as an example, but it is made of a non-rigid material such as a chain or a steel wire. Also good.

  (3) The temporary construction material 3 is not limited to supporting the main stairs 1 shown in the above-described embodiment over the entire length, for example, only a part of the main stairs 1 in the stairs length direction. You may support.

  (4) In the above-described embodiment, the case where the temporary frame 3 is disposed below the main staircase 1 has been described as an example. However, the main staircase such as the outside of the main staircase 1 in the staircase width direction is shown. 1 may be arranged on the lateral side of 1, and may be arranged above the main stairs 1 in some cases.

  (5) The specific configurations of the main stairs 1, the landing 2 and the temporary frame 3, and the specific configurations such as the connection structure thereof are not limited to the configurations shown in the above-described embodiment, but various configuration changes. Is possible.

1 staircase for main construction 2 landing 3 temporary building material

Claims (2)

  A staircase installation method in which a temporary frame is placed between upper and lower landings formed in a building under construction, and a main stairs is installed between the landings in a state of being temporarily supported by the temporary frame.   The staircase installation method according to claim 1, wherein the temporary building material is disposed below or laterally to the main stairs.

Images