JPS63147026A - Construction of heat storage tank - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a construction method for a heat storage tank.

``Prior art, problems to be solved by invention'' Conventional heat storage tanks are constructed by placing reinforcing bars in the local walls and ceiling after floorboard construction, assembling a formwork, and pouring concrete into the formwork. After curing, the formwork was dismantled and the interior was insulated and waterproofed using on-site spraying techniques.

However, in the conventional construction method mentioned above, the work environment is extremely poor because the assembly of the formwork, the dismantling of the formwork as a post-process, the insulation, waterproofing construction, etc. are all carried out in a closed space, and the work environment is extremely poor, as is the transport of equipment and the movement of people in and out. It was difficult and the work efficiency was poor, and there were also problems in terms of work safety, such as the accumulation of harmful gases and falling equipment.

In addition, since insulation and waterproofing work is done on-site, the accuracy of the work is left to the skill of the builder, resulting in variations in quality.
The current situation is that complaints such as water pollution are occurring frequently.

"Means for Solving the Problems" In order to solve the above-mentioned conventional problems, this invention uses prefabricated heat insulation panels on the inner surface of the heat storage tank and assembles and constructs them without using any support such as shoring. By using this instead of formwork and integrating it with the poured concrete, we can eliminate the need for supports, and there is no need for post-processes such as dismantling the formwork in a closed space or installing insulation and waterproofing. It is possible to work safely and efficiently in a wide open space at all times, and uniform quality is achieved by prefabricating internal insulation, waterproofing, and formwork construction using factory-processed insulation panels. This paper proposes a rational construction method for a heat storage tank that facilitates maintenance and reduces running costs without causing peeling, falling, or wood contamination of the insulation material.

"Embodiments" Below, embodiments of the present invention shown in the drawings will be described.
Using the constructed work floor l as an installation surface, height-adjustable reference frames 2 and 2' are installed on this at positions corresponding to the inner and outer surfaces of the peripheral wall portion (walls and pillars) to be constructed.

The reference frame 2, 2° is made of a horizontal angle steel material or the like, and the lower end is fixed to an anchor 4 or the like on the work floor 1, and a double nut 6 is attached to the protruding support bolt 5 through a flatket 3 provided at the bottom. By adjusting the position of tightening the nut 6, horizontal leveling and positioning to a predetermined height can be performed.

Floor reinforcing bars 7 are arranged on the working floor 1, and peripheral wall reinforcing bars 8 for walls and columns are arranged between the inner and outer reference frames 2 and 2, and in this state concrete is placed on the working floor 1-A. A pressure-resistant floor 9 is created by pouring the pressure-resistant floor 9, and a floor plate 10 is laid on top of this. A heat insulating material 11 is laid on the bottom of the floor plate 10, and a plate having pressure resistance and corrosion resistance such as FRP is used on top of the heat insulating material 11.

Next, the insulation panel 12 is placed on the reference frame 2, and the reference frame 2 is
A formwork panel 13 is assembled on top, and the two are tightly connected by a separator 14 with a turnbuckle to perform heat insulation, waterproofing, and formwork construction of the peripheral wall portion consisting of walls and columns.

This heat insulation panel 12 has a lattice-shaped reinforcing ridge 12a on the back side.
It is made of a rectangular plate made of FRP or the like with pressure resistance and corrosion resistance, and a heat insulating material 12b is bonded to the back surface of the rectangular plate.

Bolts are used to connect the insulation panels 12 and 12 to each other and the insulation panels 12 and the reference frame 2, and U-clip-shaped clamping clips 15 as shown in Figures 1O to 11 are used for joints that can only be tightened with bolts. , Packing material 1 on mutual contact surface
6 to ensure waterproofness.

When the narrow clip 15 is made of a heat insulating panel 12 or a soft elastic plate such as FRP, the U-clip is configured so that it can be tightened by making surface contact, since the contact part is dented by line contact with the U clip. A rotating arm 15b is provided on the U-shaped clamping piece 15a, and a pin 15c fixed to the rotating arm 15b is inserted into a hole bored in the ribs 12a, 12a of the heat insulating panel 12, and the clamping piece 15a is rotated. Packaging material 1
The ribs 12a, 12a are clamped and compressed via the ribs 6.

The form panel 13 is assembled using a conventional method, or in the case where two heat storage tanks are installed in series, a heat insulating panel 12 is assembled in place of the form panel 13 on the adjacent wall portion.

The separator 14 is clamped to the end material of the formwork panel 13 using a cone as in the past, and the joint nut 17 at the end is clamped to the rib as shown in FIGS. 12-14 for the insulation panel 12. It is connected by a pin 19 to a pair of connecting plates 18 attached to the intersection or joint of the parts 12a.

1M# again! When two tanks are installed in series, a communication pipe 20a, a ventilation pipe 20b, and a drain pipe are installed between adjacent tanks.

FIG. 15 shows how a large-diameter communicating pipe 20a is installed. The communicating pipe 20a is preferably made of FRP with a flange 20" integrally provided at one end, or a separately molded FRP. A flange 20" is glued to one end, and an opposing insulating panel 12.1 is attached to the other end.
The flange 20° is inserted into the through hole 21 made at 2, and the flange 20° is bonded to the heat insulating panel 12 with an adhesive.

Next, a pair of accessories 22, 22 in the form of a ring body with a cross section cut in half are attached to the outer periphery of the other end of the communication pipe 20a protruding from the through hole 21 on the other side and to the heat insulating panel 12 using adhesive. At the same time, a groove-shaped holding fitting 25 having a tightening bolt 24 is attached to one end between both ends of the communication pipe 20a, and the steel hunt 23 and tightening bolt 24 are attached alternately. While tightening, the accessories 22, 22 are firmly fixed and reinforced against later concrete pouring.

Furthermore, Fig. 16 shows how a small-diameter ventilation pipe 20b is installed (the same goes for the drain pipe).This ventilation pipe 20b is similarly made of FRP, has a 20° flange at one end, and has a through hole 2.
1, an accessory 22 consisting of a ring with a cross section is attached to the end thereof, and is adhered to the end and the heat insulating panel 12 with adhesive, and in this state, a tightening cup 26 is attached to one end. Insert the bolt 28 that has been installed and locked with the nut 27, apply this tightening cup 26 to the flange 20° on one side, and in this state attach a similar tightening cup 26 to the end of the bolt 28 on the other side. After attaching it, apply it to the accessory 22 and tighten the nut 27 on the other side to reinforce both ends of the communicating pipe 2o against later concrete pouring.

Next, we move on to insulation of the ceiling and construction of formwork. First, a lower steel member 29 such as an angle is fixed to the upper end of the assembled heat insulating spring 12, and then an upper steel member 30 such as a groove type is fixed on top of it. Fix it.

Then, a heat insulating panel 31 similar to that of the wall portion is fixed to the lower steel member 29 with bolts or the like, and the ceiling portion is lined in series with the heat insulating panel 12 of the wall portion while sequentially joining the heat insulating panels 31 to each other.

A supportless formwork plate 32 having pressure resistance, such as a deck plate, is placed on top of the upper steel material 30, and ceiling slab reinforcing bars 33 are arranged on top of this.

After completing the construction of the formwork for the peripheral wall and ceiling in this way, the peripheral wall 34 and the ceiling slab 35 were constructed by pouring concrete into these, thereby integrating the concrete into the inner surface of the peripheral wall 34. A heat insulating and waterproof layer consisting of the heat insulating panel 12 is formed.

After the concrete hardens, the outer formwork panel 13 is dismantled to complete the construction. Therefore, no post-construction work will be done inside.

"Effects of the Invention" As described above, according to the present invention, a pressure-resistant floor is created by arranging floor reinforcing bars and surrounding wall reinforcing bars on the installation surface, and after pouring concrete on the floor, performing insulation construction. The process of assembling a heat insulating panel inside the reinforcing bars of the peripheral wall and assembling a heat insulating panel or formwork panel on the outside, placing the heat insulating panel on the ceiling and installing a pressure-resistant formwork plate above it. At the same time, the process consists of the process of arranging slough reinforcing bars on the pressure-resistant formwork plates, and the process of pouring concrete into the surrounding walls and ceiling, so construction can be carried out at all times without any work being done in a closed space inside. The work can be carried out in an open space without the need for temporary equipment such as shoring, and the work environment is good as equipment can be brought in and out and workers can move around freely.In addition, internal insulation and waterproofing can be done at the same time as building the frame. Since the structure is structured in layers, there is no need for post-processes such as internal formwork dismantling and insulation construction, and construction can be streamlined to improve construction efficiency and ensure work safety.

Furthermore, since the inner surface insulation, waterproofing, and formwork are prefabricated by assembling factory-processed insulation panels, it is possible to achieve uniform quality and maintain the insulation without peeling, falling, or water pollution. The key is to simplify management and reduce running costs.

[Brief explanation of the drawing]

Figures 1 to 5 are longitudinal sectional front views showing the construction state of this invention in the order of steps, Figure 6 is a partial perspective view showing the assembled state of the heat insulation panel, and Figure 7 is a diagram showing the configuration of the reference frame portion and the configuration of the ceiling portion. 8 is a perspective view showing the assembled state of the inner heat insulating panel according to the present invention; FIG. 9 is a vertical sectional view of the wall portion; FIG. 10 is a plan view of the clamping clip used in the present invention; Fig. 11 is a longitudinal sectional view showing the same state of use, Fig. 12 is a longitudinal sectional view showing the connecting structure of the heat insulating panel and the separator, Fig. 13 is a front view of the same, and Fig. 14 is a front view of another embodiment of the same. FIG. 15 is a longitudinal sectional view showing how the pipes are attached when the heat storage tanks are installed in series, and FIG. 16 is a longitudinal sectional view showing the reinforcing structure. l... Working floor (installation surface), 7... Floor reinforcing bars, 8... Peripheral wall reinforcing bars, 9... Pressure-resistant floor, 10... Floor plate, 11... Insulating material, 12... Insulating panel, 12b... Insulation material, 13.
- Form panel, 31... Insulation panel 32... Formwork plate, 33... Slab reinforcing bar, 34... Peripheral wall section, 35... Ceiling slab.

Claims (1)

[Claims] A process of arranging floor reinforcing bars and peripheral wall reinforcing bars on the installation surface,
After pouring concrete on the floor, insulating the floor to create the floor, assembling the insulation panel inside the reinforcing bars of the peripheral wall and assembling the insulation panel or formwork panel on the outside, and the process of assembling the insulation panel on the outside. It consists of the steps of arranging a heat insulating panel and installing a pressure-resistant formwork plate above it, arranging slab reinforcing bars on the pressure-resistant formwork plate, and pouring concrete into the peripheral wall and ceiling. , a construction method for a heat storage tank characterized by not using construction materials such as shoring.