JPS5934331A - Construction of sewage treatment facility - Google Patents

Abstract

PURPOSE:To lessen the amount of civil construction operations on site for shortening the period of construction of the titled device by a method in which a floating structure is built up in a manufacturing place different from the construction site and sewage treatment facilities are installed on the floating structure. CONSTITUTION:Concrete is placed into a steel shell-type framework 2 manufactured in a manufacturing place 1 different from the construction site to form a floating structure 4. The floating structure 4 is floated on water, remaining concrete is placed into the structure 4, and a sewage treatment equipment 8 is installed on the structure 4. A foundation mound 10 is formed on the seabed as a construction site, and the structure 4 is delivered on the mound 10 and settled there. Therefore, the amount of operations on site can be lessened and troubles to accompany with noise and scenery can be eliminated.

Description

[Detailed Description of the Invention] The unexploded 11J was located near the coast at a water treatment facility Hf! 3. Conventionally, when constructing a sewage treatment facility on land, the ground is excavated and the foundation is constructed, and then the sewage treatment facility is constructed. The ground was then backfilled.

However, pj! Constructing sewage treatment facilities on land is problematic due to the lack of land, so in places located on the sea, sewage treatment facilities are sometimes constructed using the sea surface near the coast.

When constructing a sewage treatment facility on the sea surface near the coast, conventionally, the reclaimed land is reclaimed on the seabed, the reclaimed land is then excavated and a foundation is constructed, and the sewage treatment facility is built on top of that. Landfill was being backfilled.

However, such construction requires a long period of time to fill up on the seabed, and in addition to the reclamation, a lot of on-site construction work such as excavation, construction, and backfilling must be carried out, which causes noise and scenery problems in tourist areas. There were many environmental inconveniences.

The present invention aims to reduce such on-site civil engineering construction work, shorten the construction period, and eliminate the problems of coastal noise and scenery, by forming floating structures at a manufacturing site different from the construction site. Install sewage treatment equipment in this (=J
The sewage facility I'+ will be towed onto the foundation mound where it will be constructed and submerged. /M construction force θ, -.

To explain one embodiment of the present invention to V (I!
In order to avoid constructing MIL facilities, steel-shelled caissons are installed at shipbuilding docks at existing shipyards, land docks, slipways, and other manufacturing locations (1) located within a short distance from the coast, as shown in Figure 1. A steel shell formwork (2) is manufactured, and this is reinforced with steel trusses (3), steel plates, etc., as shown in Figure 2. Then, reinforcement was arranged inside the steel shell formwork (2), and after installing the sinking equipment (9) such as Jatsugi on 1/1f11 of the formwork (2), a part of J5 was installed. Or all the concrete is placed in one layer to form a floating structure.And this f″? ,-1- Launch the structure and float on the water1. and float it as shown in Figure 3.

+11/7 The structure (4) is moored to the quay (5), and while the structure (4) is floating on the water -1-(6), the concrete bridge (7)1 Using
+12, formed a sedimentation tank, aeration tank, Iυ final sedimentation tank, and installed water treatment equipment (8) (-JC-
Jru. Then, this Float-I: Structure (4) is towed to the 1. water treatment facility construction site.

On the other hand, as shown in Figure 5, a foundation mound (10) such as a pile foundation, a cell foundation, or a gravel foundation is prepared in advance on the seabed at the site where the sewage treatment flil will be constructed. Float-1 and structure (4) that have been brought down will be submerged in the foundation mound 10) by adding water ballast water (II) or by using the tidal difference in the sea surface.

In advance, a sinking machine such as a jack is placed on the underside of the floating structure (4) as a clear run adjustment III. Since H (9) has been lifted, the floating Jl structure (4) has been sunk.
A space is formed between the bottom surface of the base mound (10) and the mortar (+2) shown in Figure 6 is injected into this space, and after the mortar (12) has hardened. is floated by the mortar (12) so that the entire load of the structure (4) is applied to the foundation mound (10),
do.

The sewage inflow pipe 03) and the discharge pipe (1ω) are connected to the submerged floating structure (4) to allow sewage to flow in and perform the sewage function. Resistance is provided by ballast, embankment θ4) and other loads 11'c.

This will complete the construction of a sewage treatment facility on the sea surface near the coast.

In the present invention, the floating structure that is the main body of the sewage treatment facility is manufactured at a manufacturing location different from the construction location, and then towed to the construction location. At the construction location, the foundation mound is created and the towed floating structure is Since it is only a matter of sinking the structure into the ground, the construction period is shortened and the amount of work required at the construction site is reduced, which has the effect of eliminating noise and landscape problems.

[Brief explanation of the drawing]

Figure 1 is a vertical cross-sectional view showing the state in which the steel shell formwork is manufactured, Figure 2
The figures are perspective views showing the reinforced steel shell formwork, and Figures 3 to 61 (vertical cross-sectional views, not showing the layout of the construction. (1) Manufacturing location, ( 2)...Steel shell formwork, (4)
...C? -1.Structures, (8)...Sewage treatment JJJi
Equipment, flO+/basic mound.

Claims (1)

[Claims] 1) Fabricate a steel shell formwork at a manufacturing location different from the construction site, pour concrete into the steel shell formwork to form a floating structure, and float the floating structure on water. After placing the remaining concrete within the floating structure and creating a foundation mound on the seabed where the sewage treatment equipment will be installed, the floating structure is towed onto the mound;
A method for constructing a sewage treatment facility, characterized by sinking a floating structure on a foundation mound.