HU187601B - Gate valve water sink and/or sewage purification one from prefabriced reinforced concrete units - Google Patents

Abstract

FIELD OF THE INVENTION The present invention relates to a sluice valve and / or a sewage treatment plant from prefabricated reinforced concrete elements. It is characterized by the fact that four of the wall elements (1, 1a), which are identical in design, have a bottom element (5) with a shoulder groove (6) that accommodates and supports the lower edge of these wall elements (1, 1a) and the upper edges of the assembled wall elements (1, 1a). is provided with a shoulder rim (7b) and is supported by a slab element (7) fixed by means of concrete steel pins. In the wall elements (1, 1a) there are steel tubes (2) sealed by steel plates (2a), which are located in one plane with their faces, and pipe sleeves (3, 4) are provided along the upper edges of the wall elements (1, 1a). There are openings (4a) and tubular sleeves (8) on the shoulder (7b) of the slab element (7), with appropriately trained wall elements (1a). The tube sleeves (3, 4, 8) may be positioned at an angle to the vertical, preferably at an angle of 45 °, and the slab element (7) may be provided with an outline (7a). It is advisable to attach the connecting concrete steel pins to the pipe sleeves (3, 4, 8) using resin mortar. -1-

Description

BACKGROUND OF THE INVENTION The present invention relates to a manhole and / or a sewage treatment shaft made of prefabricated reinforced concrete elements.

The bottom and wall structures of the conventional water supply manholes and sewage treatment shafts currently used in the field of water construction are made monolithically of concrete. The slab part is built with prefabricated reinforced concrete slabs with a monolithic part for the construction of the manhole. This traditional method of construction is lengthy, costly and, in addition, heavily dependent on the weather.

The object of the invention is to overcome these difficulties.

It is an object of the present invention to provide prefabricated panels, sidewalls and slabs for water supply gutters and sewage treatment shafts from prefabricated elements, which allows for a practically panel-like construction and, in contrast to the current construction process of 2-3 weeks. allow a half-day construction period. At the same time, the shafts made according to the invention should be equivalent to the conventionally constructed shafts in terms of stability and strength.

The object of the present invention is solved by providing a gutter edge and a shoulder edge with a bevelled edge on the edges of the wall elements, which are provided in the form of four and that the wall elements have steel tubes sealed by means of steel plates which are flush with their faces, and that there are pipe sleeves accommodating the reinforcing steel pins connecting the upper edges of the wall elements, there are pipe sleeves.

In a preferred embodiment, the sleeves are at an angle to the vertical, preferably at an angle of 45 °.

The use of a gate valve and / or a sewage purification shaft according to the invention has the following main advantages:

- on-site formwork, concreting, after-treatment is not carried out;

- significant material and labor savings can be achieved;

- construction time approx. can be reduced to half a day;

- does not require temporary energy and other peripheral investments during construction;

- the manhole assembly, ie the construction of the prefabricated elements, does not require any particular expertise;

- the mechanical installation works can be practically started after assembly;

- constant size of mines allows mechanical typing;

- the side walls of the shafts are of the same height, so that they can be manufactured using a variable side width template;

The same applies to the slab and bottom plate;

- in groundwater, the duration of the lowering of the groundwater level can be reduced to 1-2 days, which results in significant financial savings.

The shafts of the present invention can be used in many fields of civil engineering, water supply, sewerage, such as gate valves, industrial water meters, pumps, sewage treatment shafts.

The present invention will now be described in more detail with reference to the accompanying drawings, in which:

1, la. and lb. Fig. 4A is a schematic top, front and side view of one type of wall element;

- a 2., 2a. and 3b. Figure 3B illustrates the top, front and side views of the bottom member;

3a, 3a. and 3b. Fig. 2 is a top, front and side view of the slab;

Figure 4 is a top, front and side view of another type of wall element;

Figure 5 is a schematic side view of a completed manhole; finally

Figure 6 is a plan view of the gate valve of Figure 5.

Turning now to the drawings, it is first of all mentioned that the invention can be applied in two ways, independently of the function of the mines, namely

A) a manhole solution for the case without groundwater, and

B) manhole solution for groundwater.

First, and also in the embodiment illustrated in the drawings, the mine solution mentioned under A) is described.

The shaft shown in Figures 5 and 6 consists essentially of two prefabricated reinforced concrete elements 1 and 1a, respectively - see Figures 1 and 3, which are based on the prefabricated reinforced concrete base element 5 shown in Figure 2 and also shown in Figure 3. prefabricated reinforced concrete is covered with 7 slabs. In practice, the wall elements 1 and la are e.g. 12 cm thick, other sizes vary by model.

As shown in Figures 1 and 4, steel tubes 2, which are sealed on both sides with steel plates 2a, are inserted into the wall elements 1 and 1a during their prefabrication. Preferably there is a welded connection between said steel tube 2 and the steel plate 2a. The "colors" of the steel plates 2a are located with the panels of the reinforced concrete 1 or la wall elements, i.e. in their plane.

This embodiment of the present invention provides a way for the pipeline to be routed through the shaft wall after the manhole has been constructed. It can be made up to 04OOmm by cutting the steel plates 2a with a flame cutter according to the size of the pipe to be installed, and then welding the pipe to be passed to the steel plate 2a at the inner and outer planes of the shaft.

During the prefabrication of the reinforced concrete wall elements 1 and la, pipe sleeves 3, 4 are placed in order to secure their connection when the wall elements 1 and la are joined. For a given shaft type, the facing wall elements 1 and 1a are identical. The wall elements 1 have smooth reinforced concrete slabs while the wall elements la have two parallel vertical edges lb which are shoulder-shaped so that the leaning

187 601 The wall elements must be securely seated. The shoulder arrangement lb has an opening 4a for receiving a reinforcing steel pin in the pipe sleeve 4 of the wall element 1.

The bottom element 5 is a reinforced concrete slab having a shoulder-like groove 6 along each of its four upper edges so that the vertically positioned wall elements 1 and 1a can transfer the force from the ground pressure to the reinforced concrete bottom plate 5.

The reinforced concrete slab 7 is slightly similar to the bottom 5 but has a curb 7a at one corner and a shoulder 7b at its outer edge, in which, in the case of the drawing, ten vertical pipe sleeves 8 are arranged so that connectivity should be ensured.

The listed wall elements 1 and 1a, the bottom element 5 and the ceiling element 7 are made in practice by mesh reinforcement. Said elements function as support plates on four sides of the support structure. The connection between the bottom element 5 and the wall elements 1 and 1a is simply made by the effect of the ground pressure on the wall elements 1 and 1a to lean against the shoulder-like groove 6 of the bottom element 5. The connection between the ceiling element 7 and the wall elements 1 and 1a is similar, but in addition to the previously mentioned pipe sleeves 3 and 8, e.g. 14 mm diameter reinforcing steel anchors are inserted into the resin mortar.

It is also possible to create an embodiment in which the vertical, 1 or 1a wall elements have an inclination of 45 °, e.g. 16 mm diameter pipe sleeves are provided. In this way, after the wall elements 1 and 1a are placed on top of each other, they have a diameter of about 14 mm and a diameter of approx. A 40 cm long reinforcing steel bar is threaded. In this version, it is suitable for installation immediately after the shaft is assembled, even if the resin mortar is approx. You do not need to wait for the 24-hour drying time.

When assembled, the individual elements are lifted by crane, the connection between them being provided by the shoulders trained in the aforesaid manner and partly by the reinforcing steel pins attached to the tubular sleeves 3, 4 integrated during concreting.

The technical novelty of the shaft according to the invention is that instead of the formerly monolithic shaft, it divides the object into separate, self-contained elements which are load-bearing and stable themselves, can be prefabricated by very simple means, their assembly does not require any need. Another novelty lies in the relationship between the elements, namely that they are contracted by the pressure of the earth and, until they are formed, the reinforcing steel pins threaded through the pipe sleeves and openings ensure the connections and the proper stability of the elements.

The solution used for the groundwater mentioned above under B) differs essentially from the solution described in A) only in the construction of the bottom 5, the connection and the insulation applied, so that the bottom 5 is larger in size than in the case under A). It is 12.5 cm wide and 3 cm deep with grooves extending parallel to the side edges into which the wall elements 1 and 1a fit. The groove 6 in this case is preferably a U-shaped steel section, which is placed in the bottom element 5 during concreting. It is then joined by the insertion of an intermediate flat steel by welding the wall element 1 and la, respectively, which has a flat concrete in its lower plane, both on the outside and on the inside. The bottom element 5 is made already at the manufacturing stage so that the insulator - the so-called insulator - is placed in its lower plane. TAURUS film and its protective layer. The insulation is carried out in the usual manner after the bottom element 5 has been installed and the wall elements 1 and 1a and the floor element 7 have been applied.

The technical novelty of the latter solution lies in the fact that an already insulated bottom element 5 is installed and only the wall elements 1 and 1a and the floor element 7 are to be connected to the insulation.

It is also possible to assemble and insulate the entire manhole made with the insulation method described above on the surface, and then lift the finished artwork by crane to the pre-prepared place below the ground level.

During the installation of the gate and / or sewage treatment shaft according to the invention described above, the prefabricated elements can be lifted from the vehicle to the final position by a crane. The construction technology in brief is as follows:

The bottom element 5 is to be placed on a sandy gravel bed, and the wall elements 1 and 1a are placed thereon so that they are in the pre-formed shoulder grooves 6 and thus temporarily supported by a rod structure. In the meantime, the reinforcing steel studs must be inserted into the pipe sleeves 3 and 4, and then the slab 7 may be placed. This completes the construction of the manhole. Due to the 24-hour bonding of the resin mortar poured into the tubular sleeves 3, 4 and 8, said prop bar structure can only be removed after one day. Mechanical installation works can be started immediately in this manhole.

As mentioned above, there is no obstacle to its construction in the groundwater layer of the present invention. In this case, due to the extra pressure of the water pressure, reinforcement by reinforcement is required and standard insulation work is not required. At the same time, of course, care must also be taken to prevent floating.

It is to be emphasized that the invention has a great potential for generating type families, both in scope and in size.

In the presence of groundwater in granular soils, the volume of underwater soil is reduced due to buoyancy. The resultant pressure is the sum of the soil pressure and the hydrostatic pressure, which does not differ significantly from the standard load in granular soils.

In the case of bound soils and fluids, the soil behaves as a dense liquid of high specific gravity, so the resulting pressure is significantly higher than the former, so it should be treated as a standard. The elements

-3187 601 is dimensioned with ezqp ground pressure.

Due to the presence of groundwater, the structure also had to be inspected for floating, where the task was to verify 1.6 to 1.8 times the safety.

The practice of the gate valve according to the invention in the presence of groundwater is as follows:

As a general rule, when the work pit can be dewatered for at least two days, the bottom element 5 is first inserted into the sand bed which has been carefully compacted and smoothed beforehand. The bottom element 5 in the template is made by inserting Hungarocel at the bottom of the template, into this Taurus foil. Of course, the foil should protrude from the formwork to such an extent that it can be used to extend the insulation. Then the ironing is done and the concreting is done.

After the bottom element 5 has been lifted, the wall elements 1 and la and the floor element 7 must be installed as described above. The pipe passages must then be prepared. After this, the wall elements 1 and la must be insulated and connected to the bottom element 5 by overlapping. The overlapping insulation of the slab 7, including the masonry portion of the slots 10, is similar to the previous one. This completes the mine construction.

Groundwater can only be released after the ground has been recharged, otherwise the shaft will float. It obviously follows that the manhole and the external pipe system must be assembled before the earth is recharged. If there is any concern that subsequent movements may occur, the manifold from the manhole and the network pipe should be connected by a flexible connection. Solutions for this have already been made.

In the special case, where dewatering of the pit can only be provided for a short period of time, the solution is to assemble the shaft with the bottom element 5 and the wall elements 1 and 1a on the surface and then lift it into the pit with a crane. The slab element 7 is then inserted. In this case, the bonding time of the artwork connections shall be waited on the surface and the lowering of the groundwater level shall be ensured only at the time of installation. Again, groundwater can only be released after pipe-laying work and after the ground has been replenished. In the case of construction in the immediate vicinity of buildings, irrespective of the two cases mentioned above, the stability of the pit and the adjacent structure must be ensured before opening the pit.

The potential detrimental effect of groundwater subsidence on structures must be taken into account and therefore the subsidence of structures must be continuously measured.

The main fields of application of the invention are:

The smaller manhole can be used as a water meter as well as in the aforementioned watertight design, when constructed by either method. Also, a smaller shaft can be used as a waterproof sewage. In this case, the miracle to be built into the formwork must be placed closer to the bottom plate. The pipe inlet or outlet must be made with a steel pipe, with the steel pipe on one side being crimped and the other on a ring so that the rubber ring of the tubular concrete pipe can provide a watertight connection on both sides. With this solution, angular turns from smaller sink differences can be ensured in the housings. If the channel is made of steel pipe, the connection to the shaft pipe is also made by welding. If a plastic pipe is used, the steel pipe of the shaft and the plastic pipe must be flanged.

In practice, it appears that the manhole family of the present invention can be used wherever the object is exposed to external ground or water pressure. Due to the recommended installation, the shaft is not suitable for bearing internal ground or water pressure in the present configuration.

In the latter version, ie when used in groundwater, the savings in the construction of the shaft are significantly higher than in the original version. This is clearly due to the fact that approx. instead of a three-week subsidence period, only approx. a two-day period applies.

As a result, approx. three weeks of groundwater recharge, including on-site and back-up training. The applied foil solution also eliminates the material and labor costs of the brick wall protecting the insulation.

The essential and technical advantages of the present invention may be summarized as follows:

- The way of joining and joining the elements is such that under load the elements are tensioned to each other, thus ensuring the stability of the artwork;

- During installation, if the pipe sleeves are inclined, the stability of the walls is ensured when the reinforcing steel is installed;

- Construction of underground water - detailed in the description - is solved in several alternatives, which is not conventional for prefabricated elements;

- If required, the on-site manhole can be completed without draining the groundwater, providing adequate technical and occupational safety conditions.

Claims (6)

Patent claims Sliding gutter and / or sewage treatment pit made of prefabricated reinforced concrete elements, characterized in that it consists of four bottom elements (5) with identical shapes (1, 1a), which receive and support the lower edge of these wall elements (1, 1a). and a slab member (7) having a shoulder (7b) supported on the upper edges of the wall elements (1,1a) and secured thereto by means of reinforcing steel pins, and steel sheets (2a) disposed in parallel with their faces in the wall elements (1, 1a). by means of a steel tube (2) sealed along the upper edges of the wall elements (1,1a), the pipe sleeves (3, 4) receiving the connecting steel anchors, and finally the wall elements (la) with shoulder-shaped (lb) (7) has shoulder edges (7b) with openings (4a) and tubular sleeves (8). -4187 601 Gate valve and / or sewage treatment shaft according to claim 1, characterized in that the pipe sleeves (3, 4, 8) are arranged at an angle, preferably below 45 °, to the vertical. Gate valve and / or sewage purification shaft according to claim 1 or 2, characterized in that a curb (7a) is formed in the slab element (7). 4. Gate valve and / or sewage purification shaft according to any one of claims ^{1 to 3} , characterized in that the steel tube (2) in the wall elements (1, 1a) is connected to the closing steel plate (2a) by welding. 5. Gate valve and / or sewage purification shaft according to any one of claims 1 to 4, characterized in that the connecting reinforcing steel anchors are preferably glued to the pipe sleeves (3, 4, 8), preferably by means of a resin mortar. 6. Gate valve and / or sewage purification shaft according to any one of claims 1 to 3, characterized in that the U-shaped steel section (s) inserted during concreting serve for the shoulder-shaped groove (6) and that the vertical wall elements (1, la) in its lower plane and on the outside and / or on the inside, there is finally an insulating and protective layer between the vertical wall elements (1, 1a) and the shoulder-shaped groove (6) of the bottom element (5).