JP7129302B2 - building construction method - Google Patents

Description

The present invention relates to a building construction method for constructing a steel frame building.

Conventionally, the following methods have been proposed as a curing method when erecting a steel frame.
Patent Literature 1 discloses a framed curing net that is attached to the outer wall surface of a building. This framed curing net is provided with mounting arms and support arms that are detachable from the building frame.
In Patent Document 2, an external scaffolding is attached to the upper end of an exterior wall PC board, and in this state, the exterior wall PC board is lifted, and the exterior wall PC board is attached to the beam steel frame of the building in a suspended state, and the external scaffolding is attached. is mounted on the beam steel frame to which the outer wall PC plate is attached in a protruding state.
Patent Literature 3 discloses a curing device that cures the outer surface of the frame of a building with a vertically extending curing frame and a curing net.
In Patent Document 4, three layers of a building are regarded as one section, and steel frame members of columns and girders at predetermined sections are erected in advance, and the erected steel frame members are temporarily fixed; A step of setting the lowest layer as a work space, arranging a protective wall on the outer peripheral side of the work space, attaching the remaining steel frame members in the work space, and finally fixing them together with the previously erected steel frame members, and dividing the protective wall into one layer. Move upward, make the layer directly above the work space a new work space, install the remaining steel frame members in the new work space, and fix them together with the previously erected steel frame members from the lower layer to the upper layer. A steel erection method for a building is shown comprising the steps of repeating to .

JP-A-6-193272 JP-A-8-60852 Japanese Patent Application Laid-Open No. 2001-140474 JP 2017-210796 A

An object of the present invention is to provide a building construction method that can easily prevent tools and materials from falling to the outside of a building when constructing a building with a steel frame.

As a method for constructing a steel-framed high-rise building, the present inventors attached a temporary beam to the outer side of the outer peripheral steel-framed pillar, then hung a vertical curing net from the temporary beam, and surrounded the outer peripheral steel-framed pillar and the vertical curing net. This space is used as a work space, and steel frame erection work is performed on the remaining steel frame members in this work space. The present invention has been made by paying attention to the point that it can be efficiently erected and fixed.
The building construction method of the first invention is a building construction method for constructing a steel-framed building (for example, a building 1 described later), wherein a plurality of layers of the building are taken as one section, and the outer peripheral steel columns ( For example, a first step (for example, step S1 described later) of erecting and temporarily fixing the outer peripheral steel frame pillar 20A described later) on the already erected outer peripheral steel frame pillar, and the above-mentioned A second step (for example, a step to be described later) of attaching a temporary beam (for example, a temporary beam 65 to be described later) extending along the outer periphery of the building and attaching a vertical protection net (for example, a vertical protection net 63 to be described later) to the temporary beam S2) and the space surrounded by the outer peripheral steel column and the vertical curing net as a working space (for example, a working space S described later), and the remaining steel members in the working space (for example, an outer peripheral steel beam 30A described later). and inner peripheral steel beams 40A) are attached and permanently fixed together with the outer peripheral steel columns, and a precast concrete floor (for example, an outer peripheral precast concrete floor 51 described later) is placed along the outer periphery of the building between the outer peripheral steel columns. A third step of installing (for example, step S3 described later) and a fourth step of repeating the first to third steps from the lower node to the upper node of the building (for example, step S4 described later) ), and

According to this invention, the outer peripheral steel columns are erected in advance at each predetermined joint, the temporary beams are attached between the outer peripheral steel columns, and the vertical curing nets are further attached to the temporary beams. As a result, the safety of the work space surrounded by the perimeter steel frame columns and the vertical protection net can be ensured. , can be prevented from falling outside the building.
In addition, since a precast concrete floor is installed along the outer periphery of the building in the work space, the precast concrete floor on the outer periphery can increase the rigidity of the erected steel members.

In the building construction method of the second invention, in the second step, the upper end of the vertical protective net is set higher than the upper end of the outer peripheral steel frame column of the predetermined joint, and the lower end of the vertical protective net is set above the predetermined joint. is lower than the floor surface of the lowest floor.

According to this invention, by making the upper end of the vertical protective net higher than the upper end of the outer peripheral steel frame column of the predetermined joint, the vertical protective net can also be used as a handrail for preventing falling. In addition, by lowering the lower end of the vertical curing net below the floor surface of the lowest floor of a predetermined joint, it is possible to prevent tools and materials from falling from the working space to the outside of the building.

In the building construction method of the third invention, when attaching the remaining steel members in the work space in the third step, attach the outer peripheral steel beams extending along the outer periphery of the building, and then install the inner side of the building. characterized by attaching a plurality of inner peripheral steel beams to the

According to this invention, a plurality of inner peripheral steel beams are attached to the inside of the building after the outer peripheral steel beams are attached to the outer peripheral steel beams erected in advance to ensure the accuracy of the steel column beam frame on the outer periphery of the building. . Therefore, when attaching the inner peripheral steel beams, the attachment positions of the inner peripheral steel beams can be flexibly adjusted, so that the steel members can be erected with high precision.

Advantageous Effects of Invention According to the present invention, it is possible to provide a building construction method that can easily prevent tools and materials from falling to the outside of a building when constructing a building with a steel frame.

4 is a flowchart of a building construction procedure according to an embodiment of the present invention; Fig. 10 is a plan view showing a state in which the steel frame erection up to the previous joint of the predetermined joint of the building has been completed; It is explanatory drawing of the construction|assembly procedure of a building (part 1, the side view which shows the situation where the perimeter steel-frame column of a predetermined joint is erected). FIG. 10 is an explanatory diagram of the building construction procedure (No. 2, a side view showing a state in which a temporary beam and a vertical curing net are attached to the outer perimeter steel columns at predetermined joints). FIG. 10 is an explanatory diagram of a building construction procedure (No. 3, a plan view showing a state in which a work space is formed); It is explanatory drawing of the construction|assembly procedure of a building (4, the side view which shows the state which attached the outer periphery steel frame beam in work space).

The present invention is a building construction method for a steel-framed building. Specifically, after attaching a temporary beam to the outside of the perimeter steel frame pillar, a vertical curing net is suspended from the temporary pillar, and the space surrounded by the perimeter steel frame pillar and the vertical curing net is used as a work space. Install and fix the remaining steel members inside.
An embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 is a flow chart of construction procedures of a building 1 according to an embodiment of the present invention.
The building 1 is a steel structure with four spans in the longitudinal direction and two spans in the lateral direction (see FIG. 2). The steel members 10 are composed of a plurality of outer steel columns 20 arranged along the outer periphery of the building 1, outer steel beams 30 arranged along the outer periphery of the building 1, and inner steel frames arranged inside the building 1. A beam 40 is included. Of these, the outer steel frame column 20 of the n section, which is to be erected this time, is the outer steel frame column 20A, the outer steel frame beam 30 of the n section is the outer steel frame beam 30A, and the inner steel frame beam 40 of the n section is the inner steel frame beam 40A. and

As an initial state, as shown in FIG. 2, it is assumed that the steel frame erection up to the (n−1) (n is a natural number) node of the building 1 has been completed. That is, the final tightening of the outer steel frame column 20, the outer steel frame beam 30, and the inner steel frame beam 40 up to the (n−1) joint is completed. Furthermore, a steel deck plate 50 is laid between the steel beams 30 and 40 . Along the outer periphery of the building 1, an outer precast concrete floor 51 is installed on the outer steel beams 30. As shown in FIG. In addition, a temporary scaffolding 60 for welding the n-node outer peripheral steel column 20A is attached to the top of the (n-1) node outer peripheral steel column 20 (see FIGS. 3(a) and 3(b)). . Furthermore, a protective net 61 is attached to the upper end of the temporary scaffolding 60 and to the outside of the building 1. - 特許庁

In step S1, as shown in FIGS. 3(a) and 3(b), the perimeter steel frame column 20A of node n is lifted, and the erected perimeter steel frame column 20A is lifted to the perimeter steel frame column of node (n−1). Temporarily fix on top of 20.
Joining plates 21 to which the outer peripheral steel beams 30A and the inner peripheral steel beams 40A are joined are provided in three upper and lower stages on the outer peripheral steel frame column 20A. Therefore, a temporary scaffolding 62 for joining the steel beams 30A and 40A is installed at the height position of the joining plate 21 before erecting the outer peripheral steel column 20A. Also, a bracket 64 for attaching a vertical curing net 63, which will be described later, is attached to the top of the outer peripheral steel column 20A. The upper end of this bracket 64 is higher than the upper end of the outer peripheral steel frame column 20A.

In step S2, as shown in FIGS. 4(a) and 4(b), a temporary beam 65 extending along the outer circumference of the building 1 is attached between the brackets 64 of the outer circumference steel frame column 20A of the n section, and the temporary beam 65 is installed. A vertical curing net 63 is attached to the beam 65 and bracket 64 . The upper end of this vertical curing net 63 is attached to the upper end of the bracket 64, and is thereby higher than the upper end of the n-section outer peripheral steel column 20A. In addition, the lower end of the vertical protective net 63 overlaps the protective net 61 and is lower than the floor surface of the lowest floor of the n-section outer peripheral steel column 20A, that is, the deck plate 50 .
As a result, as shown in FIG. 5, a working space S surrounded by the outer peripheral steel column 20A and the vertical curing net 63 is formed.

In step S3, as shown in FIGS. 6(a) and 6(b), the outer peripheral steel beam 30A and the inner peripheral steel beam 40A, which are the remaining steel members 10 in the work space S, are connected and attached to form the outer peripheral steel column. It is fully tightened together with 20A to be permanently fixed. Here, when attaching the outer peripheral steel beams 30A and the inner peripheral steel beams 40A, first, the outer peripheral steel beams 30A are attached along the outer periphery of the building 1, and then the inner peripheral steel beams 40A are attached inside the building 1.
Subsequently, a steel deck plate (not shown) is laid between the steel beams 30A and 40A, and then an outer precast concrete floor 51 is installed along the outer periphery of the building 1 between the outer steel columns 20A.
In step S4, the steps S1 to S3 described above are repeated from the lower node of the building 1 to the upper node.

According to this embodiment, there are the following effects.
(1) Peripheral steel columns 20A are built in advance for each predetermined joint, temporary beams 65 are attached between the outer peripheral steel columns 20A, and vertical curing nets 63 are attached to the temporary beams 65. As a result, the safety of the working space S surrounded by the outer peripheral steel frame column 20A and the vertical curing net 63 can be ensured, and even if a tool or material falls in this working space S, the dropped object will not be vertically cured. Since it is caught on the net 63, it can be prevented from falling outside the building 1. - 特許庁
In addition, since the outer precast concrete floor 51 is installed along the outer periphery of the building 1 in the work space S, the rigidity of the erected steel frame members 10 can be increased by the outer peripheral precast concrete floor 51 . In addition, after the other steel members (outer peripheral steel beam 30A, inner peripheral steel beam 40A) are permanently fixed to the outer peripheral steel frame pillar 20A, the outer peripheral precast concrete floor 51 is installed in the outer peripheral part of the building 1, so that the outer peripheral steel frame pillar 20A and the steel frame beams 30A, 40A.

(2) By making the upper end of the vertical protective net 63 higher than the upper end of the n-section outer peripheral steel frame column 20A, the vertical protective net 63 can also be used as a handrail for preventing falling. In addition, tools and materials can be prevented from falling from the work space S to the outside of the building by setting the lower end of the vertical curing net 63 lower than the upper surface of the deck plate 50 on the lowest floor of the nth floor.

(3) After attaching the outer peripheral steel beams 30A to the outer peripheral steel columns 20A to ensure the accuracy of the steel frame column-beam frame on the outer periphery of the building, a plurality of inner peripheral steel beams 40A are attached inside the building 1. Since the mounting position of the inner circumferential steel beam 40A can be flexibly adjusted when the steel beam 40A is mounted, the steel frame member 10 can be erected with high accuracy.

It should be noted that the present invention is not limited to the above-described embodiments, and includes modifications, improvements, etc. within the scope of achieving the object of the present invention.

S... Work space 1... Building 10... Steel frame member 20... Peripheral steel frame column 20A... Peripheral steel frame column of (n+1) section 21... Joining plate 30... Peripheral steel frame beam of (n+1) section 30A... Peripheral steel frame beam of (n+1) section 40... Inner periphery steel frame Beam 40A... Inner circumference steel beam of (n+1) joint 50... Deck plate 51... Perimeter precast concrete floor 60... Temporary scaffolding 61... Curing net 62... Temporary scaffolding 63... Vertical curing net 64... Bracket 65... Temporary beam

Claims (3)

A building construction method for constructing a steel-framed building, comprising:
A first step of erecting and temporarily fixing a plurality of layers of the building as a section, and erecting the outer circumference steel frame pillar of a predetermined section on the already erected outer circumference steel frame pillar;
a second step of attaching a temporary beam extending along the outer periphery of the building between the tops of the outer peripheral steel columns at the predetermined joint, and attaching a vertical curing net to the temporary beam;
Using the space surrounded by the outer peripheral steel column at the predetermined joint and the vertical curing net as a working space, the remaining steel members in the working space are attached and permanently fixed together with the outer peripheral steel column at the predetermined joint, and a third step of installing a precast concrete floor along the perimeter of the building between the perimeter steel columns at predetermined joints ;
and a fourth step of repeating the first step to the third step from the lower node to the upper node of the building. In the second step, the upper end of the vertical protective net is set higher than the upper end of the outer peripheral steel frame column of the predetermined joint, and the lower end of the vertical protective net is lower than the floor surface of the lowest floor of the predetermined joint. The building construction method according to claim 1, characterized in that: When installing the remaining steel members in the work space in the third step, installing an outer peripheral steel beam extending along the outer periphery of the building, and then installing a plurality of inner peripheral steel beams inside the building. The building construction method according to claim 1 or 2, characterized by:

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