JP3225456B2 - How to build a building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for constructing a building suitable for constructing a building for accommodating large-scale equipment and equipment, such as a boiler for a thermal power plant.

[0002]

2. Description of the Related Art In general, a building for accommodating large-scale equipment and facilities, such as a boiler of a thermal power plant, is formed of a steel frame having a large cross section. Conventionally, to construct such a steel-framed building, a large lifting machine was used to construct the steel frame from the bottom up, and after the construction was completed, equipment and facilities were brought inside.・ It was installed.

[0003]

However, the conventional building construction method as described above has the following problems. First, in order to construct the steel frames constituting the building, since these steel frames have a large cross section, it is necessary to use a large lifting machine to lift them. For this reason, if the site of the building to be built is narrow, it is difficult to secure space for installing such a crane,
The problem that shortage of temporary land occurs occurs. In addition, when installing the roof frame, since this work is performed at a high place, there is room for improvement in terms of safety. Furthermore, if it is desired to start operation of equipment and facilities early,
It is necessary to speed up the loading of equipment and facilities. However, in order to support the load of large-sized equipment and equipment at the time of loading, the building must have a required strength. For this reason, to carry in equipment and facilities before the completion of building construction, the building must be reinforced with a large number of temporary reinforcing members, which is very time-consuming and requires a lot of time. It is a fact that the carrying-in work of the equipment and the facilities cannot be performed until the operation is completed. Therefore, it is difficult to accelerate the operation start of the equipments and the facilities. The present invention has been made in consideration of the above points, and can be constructed even on a narrow site,
It is another object of the present invention to provide a method for constructing a building that can safely perform the construction work and that can start operation of the housed equipment and facilities at an early stage.

[0004]

The invention according to claim 1 is
A method for constructing a building for accommodating large-scale equipment, facilities, and the like, wherein after constructing a pillar of the building, a first step of constructing a roof frame on the pillar, A second step of suspending by a suspension means provided on the roof frame and installing at a predetermined position, and a third step of constructing an outer peripheral frame forming an outer periphery of the building, wherein in the first step When constructing the pillar, first, a temporary pillar of a certain length is formed, and a roof frame of the building is integrally provided on the temporary pillar, and then a part of the total length of the pillar is erected. Then, after that, a climbing operation for obtaining a reaction force on the pillar by jack-up means provided on the temporary pillar to climb the temporary pillar and the roof frame integrally, and the pillar below the climbed roof frame. Pillar extension work to extend Is characterized in that the repeated alternately.

According to a second aspect of the present invention, in the method for constructing a building according to the first aspect, after the first step, a part of the outer peripheral frame is attached to a lower surface of the roof frame constructed in the first step. It is characterized in that it is pre-attached and integrated with the pillar, and then the second step is performed.

[0006]

According to the first aspect of the present invention, in the first step, the pillars and the roof frame of the building are constructed, and in the second step, the equipment and facilities are suspended by the suspension means provided on the roof frame, and this is suspended. The building was constructed by installing it at a predetermined position and constructing the outer frame in the third step. In this way,
When the pillars and the roof frame of the building are constructed, the equipment and facilities are installed prior to the construction of the outer frame, so that the test operation of the equipment and facilities can be performed from an early stage. Further, in constructing the pillar in the first step, first, a roof frame of a building is provided above the temporary pillar, then a part of the total length of the permanent pillar is erected, and then the temporary The construction was such that the climbing work for the columns and the roof frame and the column extension work were alternately repeated. This allows
Construction work of the roof frame can be performed on the ground.
In addition, by providing the roof frame with a lifting means such as a hoist crane, it is possible to construct the building without installing other lifting equipment or the like particularly on the ground.

According to the second aspect of the present invention, after the first step, a fixed length outer peripheral frame is attached to the lower surface of the constructed roof frame to be integrated with the pillar, and then the second step is performed. . With this, the frame consisting of the roof frame and the pillars is reinforced by the pre-installed outer frame and becomes strong, and it is possible to withstand the load when suspending equipment and facilities in the second step. Become.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings. Here, for example, an example in which a building for housing a boiler provided in a thermal power plant is constructed will be described. FIG. 1 shows a building constructed by applying the building construction method according to the present invention. In this figure, reference numeral 1 denotes a boiler (equipment), 2 denotes a building that houses the boiler 1, 3 denotes a pillar that forms the building 2, 4 denotes a roof frame, and 5 denotes an outer frame that forms an outer peripheral portion of the building 2 (FIG. (Indicated by the hatched portion in (a)).

As shown in FIG. 1, a boiler 1 includes a building 2
And is installed on the support 6.

The pillars 3, 3,... Constituting the building 2 are
Are disposed on four sides around the boiler 1. Each pillar 3 is made of reinforced concrete,
It is formed from a box column having a rectangular tubular shape in cross section.

The roof frame 4 is provided so as to be supported on the columns 3, 3,..., And projects a certain dimension outwardly in the horizontal direction from the columns 3, 3,. The roof frame 4 is made of steel, and is formed by assembling an upper chord material 7, a lower chord material 8, a connecting member 9 for connecting these members, and a lattice material 10 in a truss shape.

The outer peripheral frame 5 is formed so as to surround the outer peripheral side of the columns 3, 3,... And is joined to the outer peripheral surface of each column 3 and the lower surface of the overhang portion 4a of the roof frame 4. The outer frame 5 is composed of a number of block-shaped outer modules 11. Each of the outer peripheral modules 11 is made of a steel frame and has a vertical member 12 that forms a column of the outer frame 5, a horizontal member 13 that forms a beam, and a brace material 1 that reinforces these members.
4.

Next, a method of constructing the building 2 having the above configuration will be described with reference to FIGS.

[First Step] First, as shown in FIG.
On the ground, place the temporary columns 2 at the positions where the columns 3 should be erected.
0 is erected. Each temporary support column 20 is made of steel, has a certain length in the vertical direction, and has an outer cross-sectional dimension that can be stored in the column 3 to be constructed. Each temporary support column 20 is provided with a climbing mechanism (jack-up means) (not shown) so that the temporary support column 20 can move up and down in a vertical direction by applying a reaction force to the column 3.

Next, the roof frame 4 is assembled on the ground, and this is joined to the temporary supports 20, 20,.

Subsequently, as shown in FIG.
By assembling a formwork (not shown) on the outer periphery of No. 0, arranging reinforcing steel there, and further placing concrete,
The columns 3, 3,... Of a certain length are formed. As a mold (not shown) used at this time, a mold (not shown) for a slip foam method is suitable.

A jib crane (suspension means) 21 is provided on the upper surface of the roof frame 4 and a lifting mechanism (suspension means) 2 is provided on the lower surface.
2 is installed respectively. The lifting mechanism 22 is composed of a hoist crane or the like that can move in the horizontal direction and can transport materials and the like in the vertical direction.

After the concrete of each temporary support 20 has hardened, the climbing mechanism (not shown) provided for each temporary support 20 is simultaneously operated to simultaneously climb each temporary support 20. Then, the roof frame 4 integrated with the temporary supports 20, 20,... Is jacked up and climbs upward.

Then, after that, the column extension work for forming the column 3 to a predetermined length on each of the columns 3 previously formed and extending the same and the climbing operation of the roof frame 4 are alternately repeated. Each pillar 3 is constructed to a predetermined length. At this time, in the column extension work, a slip form method in which the form is slid upward is applied. Necessary materials such as reinforcing bars are lifted by the jib crane 21 and the lifting mechanism 22.

As shown in FIG.
After constructing 3, ... to a predetermined length, the jib crane 21
Then, the temporary columns 20 (see FIG. 3) are dismantled and removed, and the roof frame 4 is placed and fixed on the columns 3, 3,. The pillar 3 and the roof frame 4 constructed in this manner constitute a core frame 23 for supporting the load when the boiler 1 (see FIG. 1) is carried in.

Subsequently, opposed side surfaces A,
On the B side, the outer peripheral module 11 to be positioned at the top
a is lifted by the lifting mechanism 22 and attached to the outer peripheral surface of the pillar 3 and the lower surface of the overhang portion 4a of the roof frame 4 as shown in FIG. Next, the attached outer peripheral module 1
On the side surfaces C and D orthogonal to 1a and 11a, the outer peripheral modules 11b and 11b are lifted and attached between the columns 3 and 3 in the same manner as described above. Thereby, the core frame 23
The joint between the pillar 3 and the roof frame 4 is the outer peripheral module 11
a, 11a, 11b, and 11b.

[Second Step] Next, the boiler 1 is loaded and installed inside the core frame 23 constructed as described above. First, as shown in FIG. 6, on the side B, below the outer module 11a attached earlier,
Are sequentially mounted from top to bottom. However, this is performed only when the site of the building 2 to be constructed is narrow and it is not possible to carry in materials from the side B side.

Subsequently, the upper half 1 of the boiler 1 to be installed
a is mounted on the movable trolley 24, and is moved from the side A to the predetermined position in the building 2 by moving it in the direction of the arrow (a) in the figure. Then, the upper half 1a of the boiler 1 is lifted and held by a lifting mechanism (not shown) provided on the roof frame 4.

Next, as shown in FIG. 7, the lower half 1b of the boiler 1 is carried in a similar manner from the side A to a predetermined position in the building 2 by the movable carriage 24. Then, the upper half 1a of the boiler 1 that has been lifted is lowered and brought into contact with the lower half 1b, and then the upper half 1a and the lower half 1b are welded and integrated. At this time, a curing sheet 25 is stretched around the boiler 1 to prevent wind during welding. Thereafter, the integrated boiler 1 is lifted by a lifting mechanism (not shown), and the movable cart 24 is pulled out from below. And
As shown in FIG. 8, the boiler 1 is lowered to place and fix the boiler 1 on the support base 6.

[Third Step] Thus, the boiler 1
After the installation, the outer frame 5 is constructed. On the side surfaces C and D, the outer peripheral modules 11, 11,... Are sequentially mounted upward from below by the lifting mechanism 22. And finally, in the same manner, the outer peripheral modules 11, 1
Are attached to the side A side. In this way,
As shown in FIG. 1, after the construction of the outer frame 5 is completed,
By dismantling and removing the lifting mechanism 22, the construction of the building 2 is completed.

In the construction method of the building 2 described above, the pillar 3 and the roof frame 4 are constructed in the first step to form the core frame 23, and the boiler 1 is suspended in the core frame 23 in the second step. The building 2 was constructed by setting this at a predetermined position and constructing the outer frame 5 in the third step. As described above, when the pillar 3 and the roof frame 4 of the building 2 were constructed and the core frame 23 was constructed, the boiler 1 was installed prior to the construction of the outer frame 5.
A trial run of the boiler 1 and the like can be performed in parallel with the construction work of the outer peripheral frame 5, whereby the start of operation of the boiler 1 can be accelerated.

After the core frame 23 is constructed in the first step, the outer modules 11a and 11b constituting the upper layer of the outer frame 5 are attached to the lower surface of the roof frame 4 in advance. As a result, the outer peripheral modules 11a,
11b strengthens the core frame 23, and when the boiler 1 is suspended in the second step, it becomes possible to withstand the load. As a result, it is possible to minimize the number of temporary reinforcing members installed only for securing the rigidity for suspending the boiler 1, and to reduce the cross section of the members constituting the roof frame 4 to a minimum, thereby reducing costs. Can be suppressed.

Further, in constructing the pillar 3 in the first step, first, the roof frame 4 of the building 2 is provided on the temporary support 20 and then a part of the entire length of the pillar 3 is erected.
Thereafter, the climbing work of the roof frame 4 and the work of extending the pillar 3 are alternately repeated to construct the pillar 3 to a predetermined length. Thereby, the construction work of the roof frame 4 can be performed on the ground, and the work at high places can be reduced, and the safety of the work can be greatly improved. Further, since the roof frame 4 is provided with the jib crane 21 and the lifting mechanism 22, the building 2 can be constructed without installing other lifting equipment and the like particularly on the ground.
It is possible to construct the building 2 even in a narrow site where the construction could not be performed.

In addition, since the outer peripheral frame 5 is composed of a large number of outer peripheral modules 11, work from high places can be reduced and the safety of the work can be improved.

Further, since the pillar 3 is constituted by a box pillar and the temporary support 20 is climbed while being housed inside the pillar 3, there is not enough space around the pillar 3 to be constructed. In this case, the pillar 3 can be constructed. Further, when the pillar 3 is constructed, the slip-form method is applied, so that the work can be performed smoothly even in a narrow work area.

In the above embodiment, the temporary support 20
Is climbed in a state in which it is stored inside the pillar 3, but, of course, the temporary support 2 is extended along the outer peripheral surface of the pillar 3.
0 may be configured to be climbed. Pillar 3
Is located inside the building 2, but the pillar 3 is
The same effect as described above can be obtained even with the configuration located at the four corners. Further, the use of the building 2 is not limited to the above, and it goes without saying that a configuration for storing equipment and facilities other than the boiler 1 may be used.

[0032]

As described above, according to the building construction method of the first aspect, the pillars and the roof frame of the building are constructed in the first step, and the equipment and facilities are suspended in the second step. The building was constructed by suspending it with the lower means and installing it at a predetermined position, and constructing the outer frame in the third step. As a result, when the pillars and the roof frame of the building are constructed, the equipment and facilities are installed prior to the construction of the outer frame, so that the equipment and facilities are tested in parallel with the construction of the outer frame. As a result, the operation of the equipment and the equipment can be started earlier. Further, in constructing the pillar in the first step, first, a roof frame of the building is provided above the temporary pillar, then a part of the entire length of the pillar is erected, and then the temporary pillar and the roof frame are provided. The climbing work and the pillar extension work are alternately repeated. Thereby, the construction work of the roof frame can be performed on the ground, and the work in high places can be greatly reduced, and the safety of the work can be greatly improved. In addition, by providing lifting means such as a hoist crane on the roof frame, it is possible to construct the building without installing other lifting equipment, etc., especially on the ground. It is possible to build a building even on a narrow site that could not be completed.

According to the building construction method of the second aspect,
After the first step, a fixed-length outer peripheral frame was attached to the lower surface of the constructed roof frame, and then the second step was performed. Thus, the frame composed of the roof frame and the pillars is strengthened by the attached outer frame, and it becomes possible to withstand the load when suspending equipment and facilities in the second step. As a result, it is possible to minimize the number of temporary reinforcing members installed only for securing rigidity for suspending equipment and facilities, and to reduce the cross section of members constituting the roof frame and the like to the minimum. Costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view and a side view showing an example of a building constructed by applying a building construction method according to the present invention.

FIG. 2 is a diagram showing steps of the building construction method,
It is the top view and front view which show the state which constructed the temporary support | pillar and the roof frame.

3A and 3B are a plan view and a front view, respectively, showing a state in which a column is constructed to have a fixed length, and a temporary column and a roof frame are lifted up.

FIG. 4 is a plan view and a side view showing a state in which the construction of the full length of the pillar is completed and the outermost frame at the top is attached.

FIGS. 5A and 5B are a plan view and a front view showing a state in which another outer peripheral frame of the uppermost portion is attached.

FIG. 6 is a plan view and a side view showing a state in which the upper half of the equipment housed in the building is carried in.

FIG. 7 is a plan view and a side view showing a state where the lower half of the device is carried in the same.

FIG. 8 is a plan view and a front view showing a state where the installation of the device is completed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Boiler (equipment) 2 Building 3 Column 4 Roof frame 5 Outer frame 20 Temporary support

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-185124 (JP, A) JP-A-6-158733 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E04H 5/02 E04B 1/35

Claims (2)

(57) [Claims] 1. A method for constructing a building for accommodating large-scale equipment, facilities, and the like, comprising: constructing a pillar of the building, and then constructing a roof frame on the pillar; A second step of suspending the equipment and facilities by a suspending means provided on the roof frame and installing the apparatus at a predetermined position, and a third step of constructing an outer frame constituting the outer periphery of the building, In constructing the pillar in the first step,
First, a temporary support column having a fixed length is formed, and a roof frame of the building is integrally provided on the temporary support column. Then, a part of the total length of the column is erected, and then the temporary support column is provided. A climbing operation in which the temporary support and the roof frame are integrally climbed by obtaining a reaction force on the column with jack-up means provided in; and a column extension operation for extending and building the column below the climbed roof frame. The building construction method characterized by alternately repeating. 2. The method for building a building according to claim 1, wherein after the first step, a part of the outer peripheral frame is pre-attached to a lower surface of the roof frame constructed in the first step, and the column is formed. A method for constructing a building, comprising integrating and then performing the second step.