JP2920490B2 - Method of manufacturing panel-joined caisson and panel-joined caisson - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a caisson used for constructing breakwaters and seawalls, and more particularly to a panel-joining caisson in which the manufacturing process is prefabricated and unitized, and a panel-joining caisson manufactured by the same method. About the formula caisson.

[0002]

2. Description of the Related Art Conventionally, caisson used when constructing structures such as breakwaters and seawalls has various sizes.
In the case of RC caisson, the length is usually about 15 m and the height is about 9 m. Such a large caisson is conventionally regarded as a reinforced concrete structure. The manufacturing process has been manufactured by repeating work processes such as assembling of reinforcing bars, setting of a form, placing of concrete, and demolding. However, at the construction site where the above-mentioned manufacturing work is performed, due to poor working conditions and poor working environment, skilled workers, mainly young people, are moving away from work to other industries. As a result, there are many problems caused by the labor shortage, such as aging due to a shortage of successors of skilled workers and a decrease in work efficiency due to a shortage of skilled workers.

[0003]

[Problems to be Solved by the Invention] In order to recover the workforce as described above, the purpose is to improve the image of the workplace environment, secure safety, improve the working conditions, and reduce the labor on site. In recent years, there has been a particularly strong demand for technological development relating to the production of large caissons by mechanized construction, robotized construction, and the development of construction materials using new materials.

[0004] It is, therefore, an object of the present invention to overcome the above-mentioned problems and to meet the needs. More specifically, prefabricated caisson manufacturing and unitization do not require a large work yard for caisson manufacturing, and a significant labor saving on-site work reduces the number of skilled workers and shortens the construction period. An object of the present invention is to provide a method of manufacturing a panel-joined caisson that can be shortened and achieve a reduction in construction cost, and a panel-joined caisson manufactured by the method.

[0005]

According to a first aspect of the present invention, there is provided a method of manufacturing a panel-joined caisson according to the first aspect of the present invention. after assembling the stage of producing, the bottom plate and internal skeletal and exterior wall panel comprising the steps of transporting to a predetermined assembly position, the internal skeletal on the bottom plate in the assembled position, the outer <br/> outside wall portion of the internal skeletal characterized in that comprising a step of attaching the wall panel.

[0006] Production method of panel joint type caisson according to the invention of claim 2, wherein the bottom plate is fabricated in advance as a semi-product steel material at the factory, the steps of producing separately in each even internal skeletal and outer panel plant, Transporting the bottom plate, the inner skeleton, and the outer wall panel as the semi-finished product to a predetermined assembly position ; and
Casting concrete on all bottom slabs to complete a composite bottom plate,
After assembling the internal skeletal on the bottom plate, characterized in that it consists of a step of attaching the outer side wall panels to the outer wall portion of the internal skeletal.

According to a third aspect of the present invention, there is provided a method for manufacturing a panel-joined caisson, wherein the bottom plate is manufactured as a composite plate or a reinforced concrete plate formed by casting concrete on a steel plate material, or an internal skeleton. Manufactured as a steel structure skeleton made of steel members or steel plates or a combination of both. The outer wall panel is a composite plate in which steel plates are arranged on the inner surface and concrete is integrated, or PC steel wires are reinforced by arranging PC steel wires in concrete. Plates, or pre-cast concrete panels made of reinforced concrete at the factory in advance , the bottom slab, the internal skeleton, the outer wall panel is carried to the assembly position, the internal skeleton is assembled on the bottom slab, and then
In addition, an outer wall panel is attached to an outer wall portion of the internal skeleton.

[0008] The method according to claim 4 panel-junction caissons according to the described invention, the bottom plate is made by block <br/> click the steel material at the factory, after transported to the position assembling the steel sheet material block perform the assembly of the steel material by integrating the block, then it was Da設the con click lied to the steel sheet material in the assembled position to complete the synthesis deck slab, on the finished synthetic sole plate, factory for the internal skeletal Assemble the internal skeleton by assembling each steel frame member etc. that has been processed and transported to the assembly position, or assemble the steel block that has been manufactured and transported to the assembly position by blocking in advance at the factory, and further, the outer wall portion of the internal skeleton Further, an outer wall panel manufactured at a factory and transported to an assembling position is attached.

According to a fifth aspect of the present invention, in the method for manufacturing a panel-joined caisson according to the third aspect , the joint portion between the outer wall panels attached to the outer wall portion of the inner skeleton is provided with a reinforcing bar projecting from the outer wall panel. The ends of the sleeve joints are butt-connected in a sleeve joint, mortar is injected into the sleeve joint, and the joints are filled with a filler and integrated.

According to a fifth aspect of the present invention, in the method of manufacturing a panel-joined caisson according to the third aspect, the vertical joint portion between the outer wall panels attached to the outer wall portion of the inner skeleton projects from both outer wall panels. The ends of the horizontal reinforcing bars thus formed are connected to each other in a sleeve joint, mortar is injected into the sleeve joint, and joints are filled with concrete to be integrated.

According to a seventh aspect of the present invention, in the method for manufacturing a panel-joined caisson according to the third aspect , the joint between the outer wall panels attached to the outer wall portion of the inner skeleton projects from the lower outer wall panel. The end of the vertical bar
Connect butt among the top of the outer wall panel sleeve joint embedded in, carried out mortar injected into the sleeve joint, also a feature to be integrated by applying a mortar spread on the horizontal joint portion I do.

[0012] Panel-junction caissons according to the invention of claim 8, on the bottom plate produced in the factory, the internal skeleton assembled which is <br/> produced also in a factory, manufactured further by Factory Wall A panel is attached to an outer wall portion of the internal skeleton.

According to a ninth aspect of the present invention, in the panel-joined caisson according to the eighth aspect, the bottom plate is configured as a composite plate or a reinforced concrete plate formed by casting concrete on a steel plate material and integrating it. The inner skeleton is configured as a steel frame member or a steel structure skeleton made of steel plates or a combination of both, and the outer wall panel is a composite plate in which steel plates are placed on the inner surface and concrete is integrated, or PC steel wires are placed in concrete. It is characterized in that it is configured as a PC plate reinforced by reinforcement or a precast concrete panel made of reinforced concrete.

[0014] The claim 1 Symbol manufacturing method of panel joint type caisson according to the invention of mounting the bottom plate of the finished product, originating in claim 2, wherein
In the case of light, semi-finished bottom slabs, and the inner skeleton and the outer wall panels are also manufactured separately in prefabricated or unitized form at the manufacturing yard of the factory, and the finished slabs
The semi-finished product, the inner skeleton and the outer wall panel are separately transported to a predetermined assembling position (caisson manufacturing yard), at which the bottom plate semi-finished product is completed , the inner skeleton is assembled on the bottom slab, and then the inner skeleton is assembled. Is carried out on the basis of the step of attaching an outer wall panel to the outer wall portion.

The bottom slab is manufactured as a composite plate in which concrete is cast into a steel plate material and integrated, or a reinforced concrete plate. The internal skeleton is manufactured as a steel structure skeleton made of a steel frame member or a steel plate or a combination of both. The outer wall panel is a composite plate in which a steel plate is arranged on the inner surface and concrete is integrated with the steel plate, or P in concrete.
PC version reinforced by placing the C steel wire, or manufactured as a precast concrete panels, such as reinforced concrete plate
Build. The bottom plate, the inner skeleton, and the outer wall panel are assembled and transported to a position, the inner skeleton is assembled on the bottom plate at the same assembling position, and then the outer wall panel is attached to the outer wall portion of the inner skeleton. (The invention according to claim 3).

[0016] If the bottom plate is of synthetic sole plate, or transported to a pre-integrated object a steel sheet material at the factory fabricated by assembling position as (semi product) (caisson production yards) or more in divided into blocks at the factory manufacturing the steel sheet material block
After carrying the (semi-finished products) to set viewing stand position, carry out the assembly of the steel sheet material by integrating each block. Then assemble
In the position
Complete the composite slab . However, at the factory, the composite bottom plate of the above configuration
To complete the fabrication, or a method of factory carrying the assembled position on the prepared as reinforced concrete deck slab is also similarly performed real <br/>.

In any case, at the assembling position ( caisson manufacturing yard ) , the inner skeleton is assembled to the bottom plate. The procedure is pre-fabricated at the factory for the internal skeleton.
Assemble each steel frame member transported to the assembly position
Method or assembling it in a factory before blocking
Internally by assembling the steel block that has been transported to the
Assemble the skeleton. Outside the completed internal skeleton
In the wall part, it was manufactured at the factory and transported to the assembly position
Attach the outer wall panel.
Akira) .

The outer wall panel to be attached to the outer wall portion of the inner skeleton is manufactured in a size and a shape capable of reducing the number of panels for the purpose of shortening the length of joints where construction is complicated as much as possible .
You. Further, consideration of the ability of construction machinery and transport properties, and from the viewpoint of weight reduction of the outer wall panels needed to ensure handleability in the field, have to desirable to use a synthetic version of the high-strength lightweight . Thus, labor saving, shortening of construction period and improvement of safety are achieved.

[0019] The pay the joint portion between the outer wall panels each other but are broadly classified into the vertical joints and horizontal joint, in particular the invention of claim 3, wherein
As for the exterior wall panel, composite version, PC version, precast
In the case of producing a concrete panel to project a portion of the reinforcing bars from the outer wall panel, an end portion of the projecting reinforcing bar connected by butt in the sleeve joint performs mortar injected into the sleeve joint, Further, a method of filling the joints with a filler such as concrete or mortar and integrating them is carried out (the invention according to claim 5).

Further, the vertical joint portion between the outer wall panels is accommodated in the outer wall panel.
The composite version, PC version, precast concrete panel and
In the case of manufacturing by refining, a part of the rebar is protruded from the outer wall panel, the ends of the horizontal rebar protruding from both the outer wall panels are butt-connected in the sleeve joint, and the mortar is inserted into the sleeve joint. Injecting concrete and filling concrete into vertical joints to integrate them
(The invention according to claim 6) .

[0021] The in filling concrete, in addition to ordinary concrete, expanded concrete, non-shrink concrete, improvement of workability by using superfluid expansion such as concrete, achieving inhibition of drying cracks. Also, the joint of the side joints between the outer wall panels is the same as that of the third aspect.
As shown in the figure, the exterior panel is composed of a composite version, PC version, precast
When manufacturing as a concrete panel, attach the end of the vertical reinforcing bar protruding from the lower outer wall panel to the upper outer wall panel.
How to connect butt in the sleeve joints embedded in Le performs mortar injected into the sleeve joint, also be integrated with construction mortar spread on horizontal joint portion
(The invention according to claim 7) .

Next, a panel-joined caisson according to the invention of claim 8 is provided on a bottom slab manufactured in a factory.
Internal skeletal manufactured in factory assembled, further plants
Characterized in that in the manufactured outer wall panel is a structure attached to an outer wall portion of the inner skeleton.

In this case, the bottom slab is manufactured at a factory as a composite plate in which concrete is cast into a steel plate material and integrated, or a reinforced concrete slab . The internal skeleton is manufactured at the factory as a steel frame or a steel structural skeleton made of a steel plate or a combination of both . The outer wall panel is manufactured at a factory as a composite plate in which a steel plate is placed on the inner surface and concrete is integrated, or a PC plate in which a PC steel wire is placed in concrete and reinforced, or a precast concrete panel of reinforced concrete plate. (The invention according to claim 9).

Next, the illustrated embodiment of the present invention will be described. FIG. 1 shows an exploded view of each component of the panel-joined caisson manufactured by the method of the present invention, and FIG. 2 shows a structural outline of the panel-joined caisson in the middle of assembly. In FIG. 1, the steel plate frame 1a forming a lower fixing portion for assembling an internal skeleton later on the upper surface of a steel plate material 1 ' as a semi-finished product constituting the bottom slab, and the integration with concrete to be cast later Rib steel plate 1 that strengthens bonding and also serves as reinforcement
b ... are arranged in a grid pattern. In addition, the steel sheet material 1 'shows a state where the steel sheet material 1' is divided into two blocks each having an appropriate size. The inner steel frame is also manufactured as a semi-finished product divided into left and right two steel frame blocks 2, 2, and a steel frame material 2 connecting the two steel frame blocks 2, 2.
3 and 24 show a configuration prepared. As an example of the size of the caisson described in FIG. 2, the width of the bottom plate 1 is 7.
5m, length is 25m, height is about 9.1m.

[0025] As seen in Figure 2, the manufacturing method of the panel joint type caisson, internal skeletal 2 is assembled on the bottom plate 1 in which a concrete structure, the outer wall panels 3 further outer wall portion of the internal skeletal 2 It is carried out in the procedure of attaching. The steel plate material 1 ', which is a semi-finished product of the bottom slab, is manufactured in a factory in consideration of securing the overall rigidity and the like, and then transported to a predetermined assembly position (caisson manufacturing yard). The internal skeleton 2 of the illustrated example is tightly connected between the H-shaped steel columns 20 erected vertically at a predetermined span with a girder 22, a diagonal member 23, a beam 24, and the like, which are also manufactured by processing a steel material. It is composed of a steel structure skeleton.

FIG. 3 shows a steel plate material 1 which is a semi-finished bottom slab manufactured in a factory in consideration of the overall rigidity and the like as described above.
′ Is placed on the barge 4, towed by the tug 5, and transported to a predetermined assembly position (caisson manufacturing yard).
Reference numeral 16 in the figure is a towing line. The internal skeleton 2 similarly manufactured at the factory is also towed on the barge 4 as shown in FIG. 4 and transported to a predetermined assembly position. The assembling position (caisson manufacturing yard) is selected at a site of a site where a caisson is to be laid, or at a site close to a manufacturing plant or a submersion site.

The bottom plate steel sheet material 1 'transported to the assembling position is unloaded by the hanger 6 and the crawler crane 7 prepared in advance as shown in FIG. 5, and is directly assembled on the ground as shown in FIG. Carried to the place. When the steel sheet material 1 ′ is manufactured in blocks, the blocks are arranged in a predetermined arrangement when carrying the blocks, and the work of integration is performed. Thereafter, as shown in FIG. 7, the lower fixing portion 11 of the internal skeleton 2 assembled on the steel plate material 1 'of the bottom slab.
Temporary installation of formwork 8 and operation of concrete pump 9
The concrete 17 supplied by the agitator 10 is poured, and the bottom slab 1 is completed.

On the other hand, the internal skeleton 2 transported from the factory by the barge 4 as shown in FIG. 4 is also unloaded by using a hanger and a crawler crane as in FIGS. Then, after the concrete 17 is poured into the steel plate material 1 ′, the internal skeleton 2 is placed on the lower fixing portion 11 of the bottom slab 1 using a crawler crane 7 or the like as shown in FIG. Work is sequentially performed, and the W point is joined by welding.

Subsequently, as shown in FIG. 9, the outer wall panel 3 is attached to the outer wall portion of the inner skeleton 2 by using the crawler crane 7 and suspending the main hook 12 and the auxiliary hook 13 in the same manner. . The outer wall panel 3
It was manufactured at the beam factory and transported to the assembly position.
is there. FIGS. 10 and 11 show details of the structure of the connection between the inner skeleton 2 and the outer wall panel 3 and the installation of joints.

FIG. 10 shows details of the vertical joint portion . Outer wall panels 3 arranged steel on the inner surface the synthetic version with integrated concrete thereto, or reinforced concrete PC version reinforced by placing the PC steel wire in, or as a pre-cast concrete panels such as concrete forming plate Manufactured in a factory, a reinforcing bar for reinforcement is built in, and a part of the reinforcing bar is protruded to the peripheral portion for joining (in the case of FIG.
1) . A joint steel plate 25 is attached by welding to a flange portion of the H-shaped steel column 20 constituting the internal skeleton 2 by a gusset 21 so as to be flush with the outer surface of the flange, and both ends of the joint steel plate 25 and a composite plate The protruding portion of the inner steel plate 30 of the manufactured outer wall panel 3 is abutted, and the W point is joined by welding to form a considerably large joint gap. The outer wall panel 3 manufactured as a synthetic version is integrated with the concrete 33 by the studs 50 erected on the inner steel plate 30, and the concrete 33 is composed of the horizontal streak 31 and the vertical streak 3
It is reinforced with 2. Further, studs 51 buried in the concrete are protruded toward the joint space to achieve integration with the filled concrete 40. Similarly, toward the joint space, the flange of the H-shaped steel column 20 and the joint steel plate 2
5, a stud 52 is also set up, and
And integration.

In FIG. 10, when the procedure of attaching the left outer wall panel 3A first and attaching the right outer wall panel 3B later is executed, the respective outer wall panels 3A, 3B are installed.
The horizontal reinforcing bar 31 protruding from the side edge of the
As a preparation for the connection, the sleeve joint 15 is previously mounted on the horizontal reinforcing bar 31 of the left outer wall panel 3A, and is moved as far as possible to the left. And the outer wall panel 3B on the right side
After hanging and mounting, each sleeve joint 15 is moved to the corresponding right horizontal reinforcing bar, and both horizontal reinforcing bars 31 are moved.
Adjust so that the insertion positions are equal to the left and right. In this state, the mortar 18 is injected into the hollow portion of the sleeve joint 15 and fixed. Then, both outer wall panels 3A, 3A
The formwork 19 is assembled on the vertical joint at the position of straddling the outer surface of B, and the concrete 40 (normal concrete, expanded concrete, non-shrinkable concrete, superfluid expanded concrete, etc.) is filled and joined integrally.

Next, FIG. 11 shows details of the horizontal joint portion. The work order is such that the lower outer wall panel 3D is mounted first, and then the upper outer wall panel 3C is mounted in a stacked manner. Projecting from the upper edge of the lower outer wall panel 3D
Upper end of the vertical reinforcing bars 32 are kept unchanged, the sleeve lower end is embedded in the supra-position of the outer wall panel 3C such that the panel lower edge in the same position the lower end of the longitudinal reinforcing bars 32 of the outer wall panel 3C Top Tei is a state of being inserted length of approximately half Ru in the hollow portion of the joint 15. When the upper outer wall panel 3C is hung by a crawler crane, the lower outer wall panel 3
Mortar 41 is laid on the upper edge of D and has a considerable thickness. Then, the sleeve joints 15 are stacked while being treated so as to insert the corresponding upper end portions of the vertical reinforcing bars 32 in the lower outer wall panel 3D into the hollow portions. Thereafter, the mortar 18 is injected into the hollow portion of the sleeve joint 15 and fixed therein, so that the upper and lower outer wall panels 3C and 3D are integrally joined.

[0033]

According to the method for manufacturing a panel-joined caisson according to the present invention, the bottom plate 1, the inner skeleton 2, and the outer wall panel 3, which are separately processed and manufactured in a factory, are connected to the caisson.
Carry to the assembly position, such as the manufacturing yard, and stay there
Te, since sequentially assembled to produce the as architectural circle Devi Le, finished caisson will similar structure to a so-called synthetic version caisson, or hybrid caissons. Moreover, it becomes a lightweight, high-strength caisson, and is easy to use. Moreover, there is no need for a large work yard in the assembly position.

In addition, as a result of the caisson manufacturing being prefabricated and unitized, all the rebar assembling work, concrete placing work, formwork assembling, and dismantling work conventionally required on site are omitted, and labor is saved. In addition, it is possible to shorten the construction period, and it is possible to carry out manufacturing corresponding to the shortage of skilled workers. Further, there is an effect that the joints between the outer wall panels can be efficiently, firmly and easily stored by the method using the sleeve joint.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a caisson structural element manufactured by the method of the present invention.

FIG. 2 is a perspective view showing a stage in the middle of assembling a caisson manufactured by the method of the present invention.

FIG. 3 is a front view showing a towed state of the bottom plate (steel plate material).

FIG. 4 is a front view showing a towing state of the internal skeleton.

FIG. 5 is a front view showing a landed state of the towed bottom plate (steel plate material).

FIG. 6 is a front view showing an installed state of a bottom plate (steel plate material) that has been landed.

FIG. 7 is a front view showing a state where concrete is poured into a steel plate material.

FIG. 8 is a front view showing an assembled state of the internal skeleton.

FIG. 9 is a front view showing an attached state of the outer wall panel.

FIG. 10 is a horizontal sectional view showing a receiving structure of a vertical joint portion of the outer wall panel.

FIG. 11 is a vertical sectional view showing a receiving structure of a lateral joint portion of the outer wall panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bottom plate 2 Internal skeleton 3 Exterior wall panel 31 Horizontal reinforcing bar 32 Vertical reinforcing bar 15 Sleeve joint 18 Mortar 40 Filled concrete 41 Spread mortar

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yutaka Kameyama 5-57 Kitanakadori, Naka-ku, Yokohama-shi Inside the Second Port Construction Bureau, Ministry of Transport (72) Inventor Osamu Kiyomiya 3-1-1 Nagase, Yokosuka-shi, Kanagawa Transport (56) References JP-B-59-32357 (JP, B2) JP-B-50-38415 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) E02D 23 / 00 E02B 3/06 301

Claims (9)

(57) [Claims] 1. a step of separately manufacturing a bottom plate, an inner skeleton, and an outer wall panel in a factory; a step of transporting the bottom plate, the inner skeleton, and the outer wall panel to a predetermined assembling position; Attaching the outer wall panel to the outer wall portion of the inner skeleton after assembling the inner skeleton. Wherein the bottom plate is fabricated in advance as a semi-product steel material at the factory, the steps of producing separately on each internal skeletal and outer panels plant, said as semi-finished products bottom plate and an internal skeleton and an outer wall panel a predetermined Transporting to the assembly position, and the bottom as the semi-finished product at the assembly position
Casting concrete on the plate to complete a composite bottom plate, assembling an inner skeleton on the bottom plate, and then attaching an outer wall panel to an outer wall portion of the inner skeleton. , Panel manufacturing method of caisson. 3. The bottom slab is manufactured as a composite slab or a reinforced concrete slab in which concrete is cast into a steel plate material and integrated, and the inner skeleton is manufactured as a steel structure skeleton made of a steel frame member or a steel plate or a combination of both. The outer wall panel is manufactured at a factory in advance as a composite plate in which a steel plate is placed on the inner surface and concrete is integrated, or a PC plate in which a PC steel wire is placed in concrete and reinforced, or a precast concrete panel made of reinforced concrete. That the bottom plate, inner skeleton, outer wall panel are in the assembling position
A method of manufacturing a panel-joined caisson , comprising transporting an inner skeleton onto a bottom plate, and then attaching an outer wall panel to an outer wall portion of the inner skeleton. Wherein the bottom plate is manufactured by blocking the steel material at the factory, performs the assembly of steel sheet materials are integrated each block after transported to the position assembling the steel sheet material block, wherein the steel sheet material in the subsequent assembly position To con
We were Da設the click lied to complete the synthesis deck slab, on the finished synthetic sole plate, or assembling the steel member or the like which has been transported to the processing and assembly position at the factory for the internal skeletal, or pre-blocked in plant Assembling the internal skeleton by assembling the steel frame block that has been manufactured and transported to the assembly position, and further attaching the outer wall panel manufactured at the factory and transported to the assembly position on the outer wall portion of the internal skeleton, Manufacturing method of panel-joined caisson. 5. The joint between outer wall panels attached to the outer wall portion of the inner skeleton, the joint of the reinforcing bars protruding from the outer wall panel is butt-connected in a sleeve joint and the sleeve joint is inserted into the sleeve joint. The method for producing a panel-joined caisson according to claim 3, wherein mortar is injected, and a joint is filled with a filler to integrate the joint. 6. A method for receiving vertical joints between outer wall panels to be attached to an outer wall portion of an inner skeleton, wherein ends of horizontal reinforcing bars protruding from both outer wall panels are connected by abutting a sleeve joint. The method for manufacturing a panel-joined caisson according to claim 3, wherein mortar is injected into the joint, and the joint is filled with concrete to be integrated. 7. A method for receiving a joint between outer wall panels to be attached to an outer wall portion of an internal skeleton, comprising the step of inserting a longitudinal reinforcing bar end protruding from a lower outer wall panel into a sleeve joint embedded in an upper outer wall panel. 4. The panel-joined caisson according to claim 3, wherein the mortar is injected into the sleeve joint, and the mortar is laid on the side joints to be integrated. Production method. 8. A on the bottom plate produced in the factory, also Engineering
A panel-joined caisson , wherein an internal skeleton manufactured in a factory is assembled, and an outer wall panel manufactured in a factory is attached to an outer wall portion of the internal skeleton. 9. The bottom slab is formed as a composite plate or a reinforced concrete slab in which concrete is cast on a steel plate material and integrated, and the inner skeleton is formed as a steel structure skeleton made of a steel frame member or a steel plate or a combination of both. The outer wall panel is configured as a composite plate in which a steel plate is placed on the inner surface and concrete is integrated, or a PC plate in which a PC steel wire is placed in concrete and reinforced, or a precast concrete panel made of reinforced concrete. The panel-joined caisson according to claim 8, wherein: