SU1337478A1 - Screw-type support structure - Google Patents

Abstract

The invention relates to the field of construction, namely to screw support structures for foundations of buildings and structures erected primarily in dense soils. The purpose of the invention is to reduce energy consumption when immersed in the ground. The screw supporting structure contains the barrel 1 with the internal cavity 2, the screw blade 3, made along the entire length of the barrel 1 in the form of two-sided folds adjacent to each other and oriented along the screw guide, forming the walls of the barrel 1. The screw blade 3 has a cutting tooth 4, on the lower working end of which is located through the loading opening 5. In the lower part of the barrel 1 is placed the tip 6 with a diameter equal to the diameter of the trunk, and in the upper part of the trunk is placed the tip 7. Immersion of the screw supporting structure in the group t is produced as follows. A leader well is drilled in the ground with a diameter equal to the diameter of the tip 6. The barrel 1 with the tip 6 is lowered into the well and by means of its rotation by the tip 7 the supporting structure is immersed in the soil. In the process of immersion of the supporting structure, the cutting tooth 4 cuts off soil chips from the borehole wall with a section equal to the cross section of the helical blade 3. The cut soil through the loading hole 5 enters the inner cavity 2 of the barrel 1. The immersion of the supporting structure is made until tip 6 reaches to the bottom of the LEADER well. The arrangement of the through loading opening 5 at the lower working end of the cutting tooth 4 allows to reduce the energy consumption for immersion of the supporting structure into the ground as a result of the reduction of the resistance of the ground penetration by the tooth 4. The fact that the screw blade 3 is made along the entire length of the barrel also reduces the energy consumption. 1 in the form of two-sided folds adjoining each other and oriented along a helical guide, forming the walls of the dam. 2 Il. (L 00 00

Description

The invention relates to the construction, in particular to screw support structures for foundations of buildings and structures erected mainly in dense soils.

The purpose of the invention is to reduce the carrying capacity when immersed in the ground.

Fig. 1 shows the screw support structure, a longitudinal section; FIG. 2 is a section A-A in FIG. one.

The screw supporting structure comprises a barrel 1 with an internal cavity 2, a screw blade 3, extended along the entire length of the barrel 1 in the form of two-sided folds adjacent to each other and oriented along a screw guide, forming the walls of the barrel 1. The screw blade 3 has a cutting tooth 4, on the lower working end of which is located through the loading opening 5. In the lower part of the barrel 1, the tip 6 is placed with a diameter equal to the diameter of the barrel, and in the upper part of the barrel there is a tip 7.

The immersion of the screw supporting structure into the ground is carried out as follows.

A leader well is drilled in the ground with a diameter equal to the diameter of the tip 6. The barrel 1 with the tip 6 is lowered into the well and by means of its rotation over the tip 7 with a capstan (not shown) the screw support structure is immersed in the soil. In the process of immersing the screw supporting structure, the cutting tooth 4 cuts off soil chips from the borehole wall with a section equal to the cross section of the helical blade 3. The cut soil through the loading opening 5 enters the inner

cavity 2 of the barrel 1. The immersion of the support structure is made until tip 6 reaches

bottom of the leader well.

The arrangement of the through loading opening 5 at the lower working end of the cutting tooth 4 makes it possible to reduce the energy consumption for immersion in

the ground of the screw supporting structure as a result of the reduction of the forces of the ground cutting by the tooth 4. The fact that the propeller blade also contributes to the reduction of energy consumption

3 is made along the entire length of the trunk 1 in the form of two-sided folds adjacent to each other and oriented along a helical guide, forming the walls of the trunk.

The reduction of energy consumption (energy consumption) for immersion of the screw support structure by reducing the required torque of the barrel 1 reduces the power of the capstan and simplifies the design of the tip 7 of the barrel of the screw support structure.

formula of invention

Screw support structure, including a hollow barrel tip, a screw blade with a cutting tooth and a loading through hole in the barrel, which in order to reduce energy intensity when immersed in the ground, the screw blade is made along the entire length of the barrel in the form of adjacent ones to the friend and oriented along the helical guide two-sided folds, forming the walls of the trunk, and the loading opening is located on the lower working end of the cutting tooth.

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Compiled by V.Gonyk Editor A.Revin Tehred.Hodanich Proofreader V.But ha

Order 4102/26 Circulation 606 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5

Production and papigraphic enterprise, Uzhgorod, Projecto st., 4

fig-2

Claims (1)

Claim A helical supporting structure, including a hollow shaft having a tip, a helical blade with a cutting tooth and a loading through hole in the barrel, characterized in that, in order to reduce energy consumption when immersed in the ground, the helical blade is made along the entire length of the barrel in the form of adjoining each other ₄₀ gu and oriented along the helical guide of the dihedral folds forming the barrel wall, and the loading hole is located on the lower working end of the cutting tooth. figs! L-fi & 2