JP6355801B2 - Construction method of dome-like roof structure - Google Patents

Description

  The present invention relates to a construction method for a dome-like roof structure.

Conventionally, when constructing a dome-shaped roof structure so as to close the opening surrounded by the upper end of the peripheral wall rising from the periphery of the floor surface, it corresponds to the entire area of the roof structure on the floor surface inside the peripheral wall It is necessary to install a large number of scaffolds to perform work at high places on the scaffolds.
For this reason, most of the work is a high place that places a burden on the worker, and there are disadvantages in that it requires materials for constructing the scaffold and labor for installing the scaffold.
Thus, it has been proposed to reduce the scaffolding by making some scaffolds movable (see Patent Document 1).

JP-A-6-193148

However, even with the above-described conventional technology, it is not possible to reduce the work at high places by workers, and since most of the scaffolding cannot be omitted, there is room for improvement in terms of cost reduction and shortening the work period.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a dome-shaped roof that is advantageous for greatly reducing the work at high places by workers, and also advantageous for cost reduction and shortening the work period. It is to provide a construction method for a structure.

The present invention is a construction method for constructing a dome-like roof structure that closes an opening surrounded by the upper end of a peripheral wall that stands up from the periphery of the floor surface, and is to be installed from the center position of the floor surface The tower construction process for constructing the tower body so that it can be dismantled from the inside vertically up to a height higher than the central part of the wall, and the central part through which the tower body is inserted on the floor surface inside the peripheral wall is excluded. The roof structure is constructed stepwise from the inner periphery side toward the outer periphery side, and the roof structure portion constructed for each construction step by step is moved up and down by the lifting device for raising and lowering the tower body. If the roof structure constructing step that raises along the tower and the roof structure excluding the central part is constructed, the roof structure is elevated along the tower by the lifting device, The outer periphery of the roof structure is above the peripheral wall And increasing step of increasing upward than the upper end of the peripheral wall, and the bonding member attaching step of attaching the periphery or on at least one joint member of the upper end of the peripheral wall of the roof structure, by the lifting device the roof structure A step of lowering and joining the periphery of the roof structure to the upper end of the peripheral wall via the joining member at the upper end of the peripheral wall, and a portion of the tower protruding from the central portion of the roof structure A central part construction step of constructing the central part on the tower part that has been dismantled and removed from the inside of the tower and left below the central part, and the tower part remaining below the central part Including a tower body removing step of dismantling and removing the inside from the inside of the tower body.

According to the present invention, since all the roof structure parts excluding the central part are constructed on the floor surface, it is advantageous in drastically reducing the work at a high place which places a burden on the worker.
In addition, since all the roof structure parts except for the central part are constructed on the floor surface, a scaffold with a height and size corresponding to the roof structure is not necessary, which is advantageous for cost reduction and shortening the construction period. Become.

It is explanatory drawing which constructed | assembled the tower body to the middle in the construction method of the dome-shaped roof structure which concerns on embodiment, (A) is a top view, (B) shows the BB sectional drawing of (A). It is explanatory drawing which shows the step which constructed | assembled the 1st cyclic | annular part among the roof structures in the construction method of the dome-shaped roof structure which concerns on embodiment, (A) is a top view, (B) is (A). BB line sectional drawing is shown. It is explanatory drawing which shows the step which constructed | assembled the 2nd cyclic | annular part among the roof structures in the construction method of the dome-shaped roof structure which concerns on embodiment, (A) is a top view, (B) is (A). BB line sectional drawing is shown. It is explanatory drawing which shows the step which further constructed | assembled the roof structure in the construction method of the dome-shaped roof structure which concerns on embodiment, (A) is a top view, (B) is BB sectional drawing of (A). Show. It is explanatory drawing which shows the step which constructed | assembled all the roof structures except a center part in the construction method of the dome-shaped roof structure which concerns on embodiment, (A) is a top view, (B) is (A). BB line sectional drawing is shown. It is explanatory drawing of the state which raised the roof structure except a center part to the upper end vicinity of a surrounding wall, (A) is a top view, (B) shows the BB sectional drawing of (A). It is explanatory drawing of the state which raised the roof structure except a center part from the upper end of a surrounding wall, and attached the joining member to the outer periphery of a roof structure, (A) is a top view, (B) is BB line of (A). A cross-sectional view is shown. It is explanatory drawing of the state which joined the dome-shaped roof structure which concerns on embodiment to the upper end of a surrounding wall, (A) is a top view, (B) shows the BB sectional drawing of (A). It is explanatory drawing which shows the state which the installation to the surrounding wall of the dome-shaped roof structure which concerns on embodiment was completed, and the tank for agricultural water was completed, (A) is a top view, (B) is BB of (A) A line sectional view is shown.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
As shown in FIGS. 9A and 9B, the present invention is applied to the construction of a dome-like roof structure of the agricultural water tank 10.
The agricultural water tank 10 includes a cylindrical peripheral wall 12 that rises from the periphery of the floor surface F, and a dome-shaped roof structure 14 that closes an opening surrounded by an upper end flange 1202 of the peripheral wall 12. ing.
The floor surface F is provided on the ground G, is made of concrete, and has a water shielding structure.
The peripheral wall 12 is constructed in a watertight manner by various conventionally known construction methods. For example, a circular plate-like metal plate is welded, or a circular plate-shaped reinforced concrete plate is joined. It is configured.

In the present embodiment, since the present invention is applied to the dome-shaped roof structure 14 of the agricultural water tank 10, the peripheral wall 12 has a circular cylindrical shape, but the peripheral wall 12 has a rectangular shape. A cylindrical shape or a polygonal cylindrical shape may be used, or depending on the structure, the peripheral wall 12 may be constructed of only columns, and the present invention is also applied to these cases.
The dome-like roof structure 14 includes a framework 1402 assembled by various members known in the art and having a large number of openings, and a plate member 1404 made of various members known in the art attached to the openings of the framework 1402. Has been.
In this embodiment, the skeleton 1402 and the plate material 1404 are both made of an aluminum alloy, and the weight is reduced.

In the agricultural water tank 10, the floor surface F and the peripheral wall 12 are first constructed, and then the dome-shaped roof structure 14 is constructed according to the present invention.
As shown in FIGS. 2 to 7, since the lifting device 16 is used in the present invention, the lifting device 16 will be described first.
The lifting device 16 includes a stage 1602, a jack mechanism 1604, and a wire 1606.
The stage 1602 has an annular plate shape that extends along the periphery of the tower body 18 and allows a worker to move around the tower body 18. The stage 1602 includes, for example, an H-shaped steel assembled in a polygonal (regular hexagonal) frame shape corresponding to the plan view shape of the tower 18, and scaffolding plates attached to the upper and lower sides of the H-shaped steel. In the present embodiment, it is configured as a steel mount.
The jack mechanisms 1604 are provided at a plurality of locations spaced in the circumferential direction of the stage 1602.
The jack mechanism 1604 includes a reaction force rod 1802 made of a steel pipe constituting the tower body 18 (a hydraulic upper and lower chuck mechanism detachably coupled to FIGS. 1B and 2B), and a vertical extension mechanism. And a hydraulic cylinder that connects these upper and lower chuck mechanisms.
The jack mechanism 1604 is disposed below the stage 1602, for example, and is connected so that the upper chuck mechanism and the lower surface of the stage 1602 can move integrally in the vertical direction.
The wire 1606 connects the stage 1602 and a plurality of locations spaced in the circumferential direction of the outer peripheral portion of the constructed roof structure 14.

The lifting device 16 is lifted by, for example, releasing the coupling of the reaction force rod 1802 by the upper chuck mechanism and elevating the stage 1602 by extending the cylinder while the lower chuck mechanism is coupled to the reaction force rod 1802. Next, in a state where the coupling of the reaction force rod 1802 by the lower chuck mechanism is released and the upper chuck mechanism is coupled to the reaction force rod 1802, the cylinder is reduced and the lower chuck mechanism is raised. Next, in a state where the coupling of the reaction force rod 1802 by the upper chuck mechanism is released and the lower chuck mechanism is coupled to the reaction force rod 1802, the cylinder is extended to raise the stage 1602. By repeating such an operation, the lifting device 16 is raised.
Further, the lowering of the lifting device 16 is performed by, for example, releasing the coupling of the reaction force rod 1802 by the upper chuck mechanism and lowering the stage 1602 by reducing the cylinder in a state where the lower chuck mechanism is coupled to the reaction force rod 1802. . Next, in a state where the coupling of the reaction force rod 1802 by the lower chuck mechanism is released and the upper chuck mechanism is coupled to the reaction force rod 1802, the cylinder is extended to lower the lower chuck mechanism. Next, in the state where the coupling of the reaction force rod 1802 by the upper chuck mechanism is released and the lower chuck mechanism is coupled to the reaction force rod 1802, the cylinder is reduced and the stage 1602 is lowered. By repeatedly performing such an operation, the elevating device 16 is lowered.
Since the stage 1602 is connected to the roof structure 14 via the wire 1606, the roof structure 14 is also raised and lowered together with the raising and lowering of the stage 1602.

As the lifting device 16, various conventionally known lifting devices such as Japanese Patent No. 3317528 and Japanese Patent No. 3561758 using an upper and lower stage, a coupling means, and a jack mechanism can be adopted.
Further, without using the jack mechanism 1604, the lifting device 16 is bridged between the pulley disposed at the upper end of the tower 18, the winch disposed on the floor F, and the stage 1602 and the winch via the pulley. It is also possible to configure with a wire.
Further, without using the jack mechanism 1604, the lifting device 16 can be constituted by a winding device fixed to the top of the tower body 18 and a wire whose lower end is connected to the stage 1602 and wound and fed by the winding device. is there.
However, when the lifting device 16 is configured using the stage 1602 or the jack mechanism 1604 as in the embodiment, the lifting device 16 is located in a limited vertical region of the tower body 18, and that region is the tower body 18. Therefore, the lifting device 16 can be disposed without taking up space around the floor surface F and the tower body 18 as compared with a lifting device using a pulley, a winch, and a wire.
Therefore, it is advantageous for securing a wide space on the floor surface F and on the outside and inside of the tower body 18, and for performing various operations efficiently from the stage 1602 or from the inside of the tower body 18. It will be advantageous.

Next, each step of the present invention will be described.
[Tower building process]
When constructing the dome-shaped roof structure 14, a tower construction process is first performed.
As shown in FIGS. 1 (A) and 1 (B), in the tower construction step, the tower 18 is constructed vertically upward from the center position of the floor F surrounded by the peripheral wall 12.
The tower 18 has a polygonal shape in plan view, and as shown in FIGS. 1B, 2B, 6B, and 7B, a plurality of reaction forces extending vertically. A rod 1802 and a buckling prevention member 1804 for connecting the reaction force rods 1802 are included. In addition, the planar view shape of the tower body 18 is not limited to a polygon and is arbitrary.
The tower body 18 is formed in such a size that an operator can go up and down in the interior thereof, and ascending / descending means such as a stairway (not shown) is appropriately provided therein, and when the tower body 18 is dismantled, the dismantling work is performed from the inside. It is designed to do. That is, as shown in FIG. 8, after the joining step of joining the periphery of the roof structure 14 to the upper end flange 1202 of the peripheral wall 12, the dismantling of the portion of the tower 18 that protrudes upward from the roof structure 14 is used as a scaffold. It can be performed from the inside of the tower body 18 without being provided, and under the roof structure 14 that is installed on the peripheral wall 12 and completed, there is provided a scaffold for dismantling the portion of the tower body 18 that remains below the roof structure 14. It can be performed from the inside of the tower body 18 without increasing the efficiency of the tower body dismantling work.

As shown in FIGS. 6B and 7B, the tower body 18 is finally constructed at a height higher than the roof structure 14 of the completed agricultural water tank 10.
In the present embodiment, in the tower building process, the tower body 18 is built to an intermediate height of the height to be built, and the tower body 18 is built while the roof structure building process described later is being performed. Built to the height that should be.
Further, as shown in FIGS. 5B, 6B, and 7B, at the stage where the tower body 18 is constructed to a predetermined height, the upper end of the tower body 18 is adjusted as necessary. A plurality of locations spaced in the circumferential direction are connected to a location of the upper end flange 1202 of the peripheral wall 12 via a wire (branch line) 20, thereby stabilizing the tower body 18, that is, supporting the roof structure 14 during construction. The structure is stabilized.

[Roof structure construction process]
As shown in FIGS. 2 (A) and 2 (B), if the tower body 18 is constructed to a height intermediate between the heights to be constructed, a roof structure construction process is performed.
In the roof structure construction process, the roof structure 14 except for the central portion through which the tower body 18 is inserted is constructed stepwise on the floor surface F inside the peripheral wall 12 from the inner peripheral side toward the outer peripheral side. At the same time, every time the roof structure 14 is constructed in stages, the elevator device 16 raises the portion of the roof structure 14 along the tower body 18.
The roof structure 14 includes a skeleton 1402 and a plate member 1404 attached to the skeleton 1402. The central portion is an opening 1410 inside the skeleton 1402 assembled in the roof structure construction process.

Specifically, as shown in FIG. 2B, the first annular portion 14-1 located on the innermost peripheral side of the roof structure 14 around the tower body 18 on the floor F is constructed. .
In this case, the lifting device 16 is assembled to the tower body 18, and a plurality of locations spaced in the circumferential direction of the outer periphery of the first annular portion 14-1 and the stage 1602 of the lifting device 16 are connected by a wire 1606. .
Then, the first annular portion 14-1 is raised to a predetermined height by the lifting device 16. Here, the predetermined height is a height at which the second annular portion 14-2 to be constructed next can be constructed on the floor surface F.

Next, as shown in FIGS. 3A and 3B, the second annular portion 14-2 is constructed outside the first annular portion 14-1 around the tower body 18 on the floor surface F. The
In this case, a plurality of locations spaced in the circumferential direction of the outer periphery of the second annular portion 14-2 and the stage 1602 of the lifting device 16 are connected by the wire 1606, and the outer periphery of the first annular portion 14-1 The wire 1606 that connects the stage 1602 of the lifting device 16 is disconnected.
In FIG. 3A, FIG. 4A, FIG. 5A, FIG. 6A, and FIG. 7A, the black circles indicate the connection portion between the constructed portion of the roof structure 14 and the wire 1606. Show.
Then, the second annular portion 14-2 is raised to a predetermined height by the lifting device 16, thereby raising both the first annular portion 14-1 and the second annular portion 14-2. .
As described above, ascending the portion of the roof structure 14 constructed for each construction step by step in the roof structure construction process causes the wire 1606 to connect the portion of the roof structure 14 constructed on the outermost side and the stage 1602. Done through.
In this way, in the roof structure construction process, as shown in FIGS. 4A, 4B, 5A, and 5B, the roof structure 14 is directed from the inner peripheral side to the outer peripheral side. Then, it is constructed in a stepwise manner and is raised along the tower body 18 by the lifting device 16.
As shown in FIGS. 3 (B), 4 (B), and 5 (B), the location of the roof structure 14 to which the wire 1606 is connected step by step moves radially outward. The wire 1606 becomes progressively longer. In this case, the wire 1606 may be added on the stage 1602 side or the roof structure 14 side, or may be replaced with a longer one.

[Rising process]
When the roof structure 14 excluding the central portion is completed, as shown in FIGS. 6 and 7, the roof structure 14 is raised along the tower body 18 by the lifting device 16, and the outer periphery of the roof structure 14. The ascending step is performed to raise the upper side than the upper end flange 1202 of the peripheral wall 12.
In this case, in this embodiment, when the difference between the outer diameter of the roof structure 14 and the inner diameter of the upper end flange 1202 is slight, and the roof structure 14 is inclined with respect to the horizontal plane, the roof structure 14 is In order to hit the upper end flange 1202, the attitude adjustment work of the roof structure 14 is performed to level the roof structure 14.

[Roof structure posture adjustment work]
The posture adjustment work of the roof structure 14 is performed as follows.
As shown in FIGS. 6 (B) and 7 (B), when the roof structure 14 excluding the central portion is constructed in the roof structure construction process, the range that can be reached by the worker located on the stage 1602 For each wire 1606, a conventionally known wire length adjusting mechanism T such as a turnbuckle or a lever block (registered trademark) is provided.
When the roof structure 14 passes through the upper end flange 1202 of the peripheral wall 12 in the ascending process, more specifically, as shown in FIG. 6B, the roof structure 14 is placed below the upper end flange 1202 of the peripheral wall 12. In a state of being close to each other, the length of each wire 1602 is adjusted by the worker on the stage 1602 via the length adjusting mechanism T, and the roof structure 14 is leveled.
In the present embodiment, since an operator positioned on the stage 1602 above the center of the roof structure 14 performs this operation, an operator positioned on the floor surface F performs an attitude adjustment operation of the roof structure 14. As compared with the above, the length of each wire 1602 can be finely adjusted through the length adjustment mechanism T while visually observing the entire large roof structure 14 and the entire inner circumference of the upper end flange 1202. This is advantageous in efficiently performing posture adjustment work.
When the roof structure 14 is leveled, the roof structure 14 is passed through the inside of the upper end flange 1202 of the peripheral wall 12 by the elevating device 16 and is raised above the upper end flange 1202 as shown in FIG. .

[Joint member installation process]
Next, as shown in FIG. 7B, a joining member attaching step for attaching the joining member 1420 to at least one of the outer periphery of the roof structure 14 or the upper end flange 1202 of the peripheral wall 12 is performed.
This joining member attaching step is performed by an operator on the upper end flange 1202 of the peripheral wall 12, and in this embodiment, the joining member 1420 is attached to the outer periphery of the roof structure 14.

[Joint process]
Next, as shown in FIG. 8, a joining process is performed in which the roof structure 14 is lowered by the lifting device 16 and the periphery of the roof structure 14 is joined to the upper end flange 1202 of the peripheral wall 12 via the joining member 1420.
This joining process is performed by an operator on the upper end flange 1202 of the peripheral wall 12, and the roof structure 14 is installed on the peripheral wall 12.

[Center part construction process]
When the joining step is completed, a central portion construction step is performed in which the portion of the tower 18 protruding from the central portion of the roof structure 14 is dismantled and the central portion of the roof structure 14 is constructed.
In dismantling and removing the portion of the tower body 18 in the central part construction process, the elevating device 16 is lowered below the center portion of the roof structure 14 and the wire 20 connecting the tower body 18 and the peripheral wall 12 is removed to remove the roof structure 14. A portion of the tower body 18 protruding from the central portion of the roof structure 14 is dismantled and removed so that the height of the tower body 18 is lower than the central portion of the roof structure 14.
In this case, the disassembled tower body 18 is removed from the outside of the peripheral wall 12 by a crane, for example.

Further, if necessary, in order to stabilize the tower body 18, a plurality of places of the tower body 18 located below the central portion of the roof structure 14 and a plurality of places on the outer periphery of the floor F are connected by wires 21. . Alternatively, when the lifting device 16 is positioned below the central portion of the roof structure 14, a plurality of locations on the stage 1602 and a plurality of locations on the outer periphery of the floor F are connected by the wires 21.
Then, as shown in FIG. 8 (B), the upper part of the tower body 18 is used as a scaffold, or when the lifting device 16 is positioned below the central portion of the roof structure 14, the stage 1602 is used as a scaffold. A plate material 1404A is attached to the inside of 1402, and the opening 1410 is closed.
In the center part construction step, both the work of assembling the framework 1402 and the work of attaching the plate material 1404A may be performed, but in this embodiment, only the operation of attaching the plate material 1404A inside the opening 1410 is performed. As a result, work at heights is reduced.

[Tower removal process]
Next, a tower body removing step of dismantling and removing a part of the tower body 18 located below the constructed central part is performed.
In the tower removal process, the lifting device 16 is lowered to the floor surface F and is removed from the tower body 18, the wire 21 is removed, and the tower body 18 is disassembled without any scaffolding. Done from inside.
The lifting device 16 removed from the tower body 18 and the disassembled tower body 18 are formed, for example, by previously forming an opening for removal at a location near the peripheral wall 12 of the roof structure 14, and from the outside of the peripheral wall 12. May be removed through the opening for removal, and then a plate member 1404 may be attached to the inside of the framework 1402 to close the opening for removal.
In the case of a building that does not require watertightness, such as a gymnasium, an opening for removal is provided in the peripheral wall 12 in advance, and the lifting device 16 removed from the tower 18 from this opening is dismantled. The tower body 18 may be removed.
By removing the tower 18 and the lifting device 16, the agricultural water tank 10 is completed as shown in FIGS. 9A and 9B.

As described above, according to the present embodiment, the roof structure 14 is constructed stepwise from the inner peripheral side toward the outer peripheral side, and is raised along the tower body 18 by the lifting device 16. When the entire roof structure 14 excluding the portion is constructed, the roof structure 14 is raised along the tower 18 to a predetermined height by the lifting device 16, and the periphery of the roof structure 14 is It joined to the upper end flange 1202 of the surrounding wall 12, and the center part of the roof structure 14 was constructed | assembled, dismantling and removing the tower 18.
Therefore, according to the present invention, since all the roof structure 14 portions excluding the central portion can be constructed on the floor surface F, the height work is performed on the outer periphery of the roof structure 14 in the joining member attaching step. Are attached to the top flange 1202 of the peripheral wall 12 in the joining process, and the work of attaching the plate material 1404A to the inside of the framework 1402 in the central part construction process. For this reason, it is advantageous to significantly reduce the work at high places, which places a burden on the workers.
In addition, since all the roof structure 14 parts except the central part can be constructed on the floor surface F, a large-scale scaffolding corresponding to the roof structure 14 is not required, thereby reducing cost and construction period. It is advantageous in planning.

In the present embodiment, in the tower building process, the tower body 18 is built up to an intermediate height of the height to be built, and the tower body 18 is built while the roof structure building process is being performed. Since it was constructed to the height that should be, the tower construction process and the roof structure construction process can be performed in parallel.
Therefore, it is advantageous for shortening the construction period.
In addition, after constructing the tower body 18 to the height to be constructed in advance, the roof structure construction process may be performed. However, in order to shorten the construction period, it is more advantageous to adopt the embodiment. Become.

In this embodiment, since the lifting device 16 includes the stage 1602, the jack mechanism 1604, and the wire 1606, the lifting device 16 can be disposed without taking up space around the tower body 18. This is advantageous in securing a large space outside and inside the body 18.
Therefore, it is advantageous to perform various operations efficiently from the stage 1602 and from the inside of the tower body 18.

In the present embodiment, since the difference between the outer diameter of the roof structure 14 and the inner diameter of the upper end flange 1202 is slight, if the outer periphery of the roof structure 14 approaches the lower side of the upper end flange 1202 in the ascending process. For example, the attitude adjustment work of the roof structure 14 that makes the roof structure 14 horizontal is performed.
In this case, in this embodiment, since the worker performs this work from the stage 1602 above the center of the roof structure 14, the roof structure is larger than when the worker performs the posture adjustment work from the floor surface F. Fine adjustment can be performed while visually observing the entire body 14 and the entire inner circumference of the upper end flange 1202, which is advantageous in efficiently performing the posture adjustment work of the roof structure 14.

  Moreover, in this Embodiment, the raise of the roof structure 14 for every construction | assembly in the roof structure construction process in steps is spaced in the circumferential direction of the outer peripheral part of the roof structure 14 in the state constructed | assembled in steps. This is performed through a plurality of wires 1606 that connect the plurality of locations and the stage 1602, which is advantageous in reliably raising the roof structure 14 in a stable state.

  Further, in the present embodiment, in the central part construction process, there is no process of assembling the skeleton 1402, and only the plate material 1404 is affixed to the inside of the opening 1410. It is advantageous in reducing the burden of

In the present invention, the plan view shape of the dome-shaped roof structure 14 is not limited to a circle, and may be an ellipse, a rectangle, a polygon, or the like, and the plan view shape is not limited.
Moreover, this invention is invention which concerns on the construction method of the dome-shaped roof structure 14, and the structure in which the dome-shaped roof structure 14 is provided is not limited to the agricultural water tank 10, A tap water container It can be applied to various structures such as a container for fuel storage, a gymnasium, a warehouse, or a structure whose peripheral wall is composed of only a plurality of pillars, and when a dome-like roof structure 14 is constructed in various structures. Widely applied.

DESCRIPTION OF SYMBOLS 10 ... Agricultural water tank 12 ... Peripheral wall 1202 ... Top flange 14 ... Roof structure 1402 ... Frame 1404, 1404A ... Plate material 1410 ... Opening 1420 ... Joining member 16 ... Lifting device 1602 ... Stage 1604 ... Jack 1606 ... Wire 18 ... Tower body 1802 ... Reaction rod 1804 ... Buckling prevention material 20, 21 ... Wire F ... Floor surface G ... Ground surface T ... Length adjustment mechanism

Claims (6)

A construction method for constructing a dome-like roof structure that closes an opening surrounded by the upper end of a peripheral wall rising from the periphery of the floor surface,
A tower construction step for constructing the tower body so that it can be dismantled from the inside in the vertical direction up to a height higher than the central portion of the roof structure to be installed from the center position of the floor surface;
On the floor surface inside the peripheral wall, the roof structure excluding the central portion through which the tower is inserted is constructed in stages from the inner circumference side toward the outer circumference side, and at each stage of construction in stages. A roof structure construction step of raising the constructed part of the roof structure along the tower body by a lifting device that lifts and lowers the tower body;
If the roof structure excluding the central portion is constructed, the roof structure is raised along the tower by the lifting device, and the outer periphery of the roof structure is raised above the upper end of the peripheral wall. An ascending process,
At the upper end of the peripheral wall, a joining member attaching step of attaching a joining member to at least one of the outer periphery of the roof structure or the upper end of the peripheral wall;
A joining step of lowering the roof structure by the lifting device and joining the periphery of the roof structure to the upper end of the peripheral wall via the joining member at the upper end of the peripheral wall;
Central wherein the tower body portion which projects from the central portion of the roof structure and removed by dismantling from the interior of the tower body to construct the central portion on the column body portion left below the central portion Partial construction process,
A tower body removing step of dismantling and removing the tower body part left below the central part from the inside of the tower body;
A construction method of a dome-like roof structure characterized by including:   The lifting device is constructed in a stepwise manner by an annular plate-like stage that is large enough for an operator to move along the periphery of the tower body, a jack mechanism that raises and lowers the stage along the tower body, A plurality of wires spaced from each other in the circumferential direction of the roof structure and a plurality of wires connecting the stage;
  The rising of the tower body by the lifting device in the roof structure construction process is performed by stepping the portion of the roof structure constructed on the outermost side of the roof structure constructed in each step and the stage. Performed by connecting with the wire,
  The construction method for a dome-like roof structure according to claim 1. When constructing the roof structure excluding the central portion in the roof structure construction step, a wire length adjustment mechanism is provided for each of the wires within the reach of the stage,
When the roof structure passes through the upper end of the peripheral wall in the ascending step, the length of each wire is adjusted via the length adjustment mechanism by an operator on the stage, and the roof structure is The attitude adjustment work of the roof structure to be leveled is performed,
The construction method for a dome-like roof structure according to claim 2 . The roof structure includes a framework and a plate material attached to the framework,
The central portion is an opening inside the skeleton assembled in the roof structure construction process,
In the central part construction process, only the work of attaching the plate material to the opening inside the framework is performed,
The construction method for a dome-like roof structure according to any one of claims 1 to 3 . The tower body is formed in a size that allows workers to move up and down inside, and is provided with lifting means for workers to move up and down,
The construction method for a dome-like roof structure according to any one of claims 1 to 4 . A plurality of locations spaced in the circumferential direction at the upper part of the peripheral wall and the upper end of the tower body are connected by a wire,
The construction method for a dome-like roof structure according to any one of claims 1 to 5 .

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