SU881207A1 - Pile foundation under production plant - Google Patents

Description

Union of Soviet Socialist Republics

USSR State Committee for Inventions and Discoveries

DESCRIPTION OF THE INVENTION

TO AUTHOR'S CERTIFICATE (61) Additional to author. certificate (22) Declared 06.08.79 (21) 2807819 / 29-33 with the addition of application N9 _ (23) Priority

Published on 15,11.81. Bulletin N9 42

Date of publication of the description 11/15/81

(..) 881 207 (51) M. Cl. ³

E 02 D 27/44 (53) UDC624.159.

.11.621.

.8-217 (088.8) (72) Authors of the invention (71) Applicant

V.P. Kura.min, M.V. Chizhevsky, V.I. Sayapin, V.I.

A. G. Oskin, N. S. Demchenko, V. A. Tkachenko, R. G. Prigoryats,

B. V. Kostoglodov, Yu.K. Gladkikh and P. A. Konovalov | - X:

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Production and technical company ¹ 'Siborggavstroy' (54) PILED FOUNDATION FOR EQUIPMENT

The invention relates to construction ·), namely, to the construction of foundations for equipment.

Known under the foundation of oborudova- _ made as one monolithic reinforced concrete ^e or prefabricated block (1].

A disadvantage of such a foundation is a large volume of excavation, as the presence in its base ^and weak soils, these soils must be replaced peschatoy bedding or concrete preparation.

Closest to the invention is a pile foundation for equipment containing 15 piles and a grill with wells for anchor bolts mounted on them [2].

The disadvantage of such a foundation is its high material consumption and 20 low reliability under shock loads caused, for example, by a hydraulic shock, in which, due to the large mass of the foundation and its low flexibility, the anchor bolts are cut off and it takes a long time to restore them, which leads to unit downtime.

The purpose of the invention is to increase the reliability of the foundation during shock loads, caused, for example, by a hydraulic shock, and to reduce its material consumption.

The goal is achieved in that in a pile foundation for equipment consisting of a pump and an electric motor connected by means of a shaft, including piles and a grillage installed on them with wells for anchor bolts, the grillage is made in the form of frames, on one of which a pump is installed, and on the other - an electric motor, and the frames are interconnected by beams parallel to the equipment shaft, and the wells are located in the frame nodes coaxially to the piles.

Figure 1 shows the foundation, a view in plan; figure 2 is a view a in figure 3; the node in figure 2.

The foundation includes a frame 1 for an electric motor (not shown) with wells 2 for anchor bolts 3 located in the nodes 4, a frame 5 for a pump (not shown), two connecting beams 6 and piles 7. The frame 5 is equipped with wells 2 located · similar to the frame 1. Both frames can be equipped with ties 8.

Pile foundation deformations during water hammer are shown by the strokes in FIG. 1. Due to the flexibility of the foundation, the voltage in the anchor bolts is significantly reduced, which protects them from destruction.

A comparative test of the operation of the prototype foundation of the proposed design and pile foundations with massive grillages. It shows that it is more reliable due to its flexibility. Its anchor bolts are only slightly deformed, and it takes only a few hours to bring the foundation into working condition. Repair work is reduced only to a slight straightening of the anchor bolts, while the anchor 15 bolts at the foundations with massive grilles are cut off, which requires their removal and the filling of new bolts. Thus, during hydraulic shocks, the proposed foundation 20 ensures uninterrupted operation of the oil pumping unit. Measuring the vibration of such foundations in normal operation shows that their amplitudes do not exceed the amplitude of the vibration of foundations with massive grilles. In addition to high reliability, the proposed foundation, due to its low material consumption, can reduce the cost and laboriousness of zero-cycle operations, completely eliminate earthworks and can be used in the construction of three oil and gas pumping stations on main pipelines.

Claims (2)

The invention relates to the construction, in particular to the construction of foundations for equipment. There is a known foundation for equipment made in the form of reinforced concrete monolithic or prefabricated block 1. The disadvantage of such a foundation is a large amount of earthworks, since if there are weak soils at its base, these soils must be replaced by sandy bedding or concrete preparation. Closest to the invention is a pile foundation for equipment containing piles and a grillage mounted on them with wells for anchor bolts 2. The disadvantage of such a foundation is a large consumption of materials and low reliability under shock loads caused, for example, by a hydraulic shock, in which, due to the large mass of the foundation and its low compliance, the anchor bolts fail and require a long time to restore them. . The purpose of the invention is to increase the reliability of the foundation under shock loads caused, for example, by a hydraulic shock, and to reduce its material intensity. The goal is achieved by the fact that in the pile foundation for equipment consisting of a pump and an electric motor connected by means of a shaft, including piles A grillage mounted on them with wells for anchor bolts, the grillage is made in the form of frames, on one of which a pump is installed, and on the other an electric motor, the frames are interconnected by beams parallel to the equipment shaft, and the wells are located in the frame nodes coaxially of the frames. Figure 1 shows the foundation plan view; figure 2 is a view of a on fig.Z node in figure 2. The foundation includes a frame 1 for an electric motor (not shown) with wells 2 for anchor bolts 3 located in nodes 4, a frame 5 for a pump (not shown), two connecting beams b and piles 7. A frame 5 is supplied on the shaft 2, located similarly to frame 1 Both frames can be provided with connections 8. The deformations of the pile foundation during a water hammer are shown by dashes in FIG. 1. Due to the pliability of the foundation, the stress in the anchor bolts is significantly reduced, which prevents them from breaking down. A comparative check of the operation of the prototype of the foundation of the proposed design and pile foundations with massive grillages. Shows that it is more reliable due to its compliance. Its anchor bolts are only slightly deformed, and it takes only a few hours to bring the foundation into working condition. The repair work only leads to a slight leveling of the anchor bolts, while the anchor bolts at the foundations with massive grillages are cut off, which requires removing and pouring new bolts. Thus, with hydraulic shocks, the proposed foundation ensures uninterrupted operation of the oil pumping unit. Measuring the vibrations of such foundations in normal operation shows that their amplitudes do not exceed the amplitudes of vibrations of foundations with massive grillages. In addition to high reliability, the proposed foundation, due to its low material consumption, reduces the cost and laboriousness of the zero cycle work, completely eliminates earthworks, and can be used for three construction of oil and gas transfer stations on main pipelines. Claims of the invention A pile foundation for equipment consisting of a shaft and an electric motor connected by means, including piles and a grillage installed on them with wells for anchor bolts, in order to increase its reliability under shock loads and reduce material intensity, the grillage is made in the form of frames, on one of which a pump is installed, and on the other - a electric engine, the frames are connected by beams parallel to the equipment shaft, and the wells are placed in frame nodes coaxially fixed. Sources of information ,, received note in the examination 1.Avtorskoe Certificate USSR № 495421, E 02 D 27/44, 1973. 2. Horus L.K. and others. The introduction of precast foundations for the main units of oil pumping stations, Stroyitelstvo pipelines, 1978, 8, p.28-29, rice, 1 b (prototype).