SU1293277A1 - Soil anchor - Google Patents

Abstract

The invention relates to the field of construction, in particular to the structures of ground anchors and allows to increase the bearing capacity of an anchor in soils of different density by adjusting the expansion of its blades. The ground anchor contains a rod 1 with a tip 2, blades 3 with longitudinal ribs 4 and a wedge of nmi lugs 6. Wedge-shaped supports 6 are placed on rod I with the possibility of longitudinal movement and fixation on the rod 1. When the blades open, 3 ends of the longitudinal ribs 4 abut against inclined surfaces Sheepdog x 6 stops. Opening of the blades, depending on the soil category, occurs at an angle of 90 °, where is the angle of internal friction of the ground. 4 cl. WITH WITH 1C s | f | / in. f

Description

one

The invention relates to the construction, in particular to the structures of the primer anchors of the splinter type.

The purpose of the invention is to vary the carrying capacity of an anchor in soils of various densities by controlling the opening of its blades.

Figure 1 shows a soil anchor when immersed; figure 2 - then

same, in working position; in FIG. 3, view A in FIG. 1; figure 4 - section bb in figure 2.

The ground anchor contains a rod 1 with a tip 2 and blades 3 with longitudinal ribs 4 on the side of the tip 2. The blades 3 are fixed on the rod. E 1 by means of hinges 5, each pair of blades turned relative to the other by 90.

Wedge-shaped supports 6 are placed on rod 1. The latter are attached to bolt 1 by bolt 7 and have a bolt slot that allows movement of the stops along rod 1 having markings and changing the angle of the blades 3.

The blades 3 are made in the form of diamond plates, the distance between the peaks of which exceeds the diameter of the rod 1 by 3-10 times. One of the tops of the plate of the blade 3 facing the rod 1, the opposite. Made unbent.

Anchor works as follows

Hammers of a hammer, for example, a pile-driving unit (not shown) are hit on the upper end of the bar 1 exposed to the ground. Perceived blows, the rod 1 is immersed in the ground. At the same time / the blades 3 are pressed by the ground to the rod and the magnitude of their projection on the ground is minimal, thereby reducing any resistance to immersion. When the required depth is reached, the hammer is turned off and the device is started to be pulled out of the ground, loading the rod 1 with static pulling force. At the same time, the bent tips of the blades 3 cut into the ground and the blades 3 unfold relative to the rod 1 around the hinge 5 until they stop against the ends of the longitudinal ribs A into the wedge stops 6. Unfolding, the blades-3 are inserted into the undisturbed soil and fully crushed

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angle pre-set before the dive, depending on the category of soil. The main surface of the blades 3, the dimensions of which are chosen from the condition that the distance between the tops of the blades plates is 3-10 times the diameter of the rod 1, ensures the location of the blades 3 in the zone undisturbed when immersed in the soil.

Opening the blades at an angle of 90 + + C) (C1 is the angle of the internal friction of the ground) ensures the involvement of the maximum soil cone in the operation of the device, since the normal reaction of the soil interacting with the blade is perpendicular to its surface and is directed away from the axis of the rod, and also additional ground masses to work. The ability to adjust the blade angle for each soil category allows for maximum utilization of the anchor bearing capacity for that soil.

When securing main pipelines in the ground, the proposed anchor design allows to increase the distance between fixing points, increase the reliability of securing of pipelines, reduce the metal intensity of the fixing complex, and increase the pace of work.

Claims (1)

Invention Formula A ground anchor, including, a rod with a tip and pivotally hinged blades attached to the rod, each of which is made in the form of a plate with a longitudinal edge on the side of the tip, differing in that, with the aim of increasing the carrying capacity in soils of different density by adjusting the opening of the blades, the anchor is provided with wedge-shaped supports placed on the gatanga with the possibility of longitudinal movement and fixation, and interacting with its inclined surface with the end faces facing the rod blades blades. Vida Vb dzie. H Fig.Z Compiled by L.Kucheba Editor M.Petrova Tehred M.Hodanich Proofreader A.Zimokosov Order 354/31 Circulation 607 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and Printing Enterprise, Uzhgorod, Projecto st., 4