NL1024298C2 - Foundation is for a telecommunication mast and accommodates mast foot and at least one another fitted in the ground. A frame is provided with anchor fixture devices which fix frame - Google Patents

Abstract

The foundation (5) is for a telecommunication mast (1) and accommodates a mast foot (4) and at least one anchor fitted in the ground. A frame (5) is provided with anchor fixture devices (8), which fix the frame to the anchor. Mast foot fixture components fix the frame to the mast foot. The frame is removable, open, horizontal, polygonal and made of beams. It is provided with mast foot fixture devices at each corner point. The frame is fitted to the base surface of the mast. Each anchor has an outer end for fixing it to the anchor fixture devices of the frame. The several anchors slope outwardly downwards, preferably at an angle between 0 and 10 degrees. This angle is virtually equal to the conicity of the mast. The anchor fixture devices incorporate a drum (11) which receives an outer end of an anchor.

Description

; 1

Mast foundation

The invention relates to a mast foundation and a method for setting up a mast, in particular for a telecommunications mast.

Masts, for example for telecommunication purposes, are generally used. In order to place such masts on the ground, a foundation is generally provided in the ground on which the mast is mounted.

In practice it is customary to dig a hole for this from a few meters by a few meters, to set up reinforcement there and to pour concrete, and to place the mast on the hardened concrete foundation. In practice, such a concrete foundation is 7x7 meters by one meter deep. Moreover, if the soil has too little bearing capacity, piles must be placed under the concrete foundation, in practice up to 4 piles. A disadvantage of this method is that it takes a long time for the concrete mass to cure. Moreover, a large hole has to be dug, with all the disturbance of the environment, and often pile driving still to be done.

The invention has for its object to at least partially eliminate the disadvantages mentioned. To this end the invention provides a mast foundation for the foundation of a mast provided with a mast foot, and comprising at least one anchor arranged in the ground, a frame 102429

I 2 I

I provided with anchor fastening means for fixing I

I of the frame at the anchor, and mast foot mounting means I

For attaching the frame to the mast base. I

I This means that an I is simple and quick step-by-step

I 5 mast to be erected. In addition, the dimensions of the mast I

Make I foot independent of the exact placement of the I

I anchors. I

In one embodiment, the frame is removed

ingible. This makes this foundation suitable for a time I

10 mast, or a removable mast that for example has an I

I must be established a number of times per year. I

I, for example, dug the anchors before installation I

I, after which the frame is mounted. I

In one embodiment, the frame is an open I

I 15 frame. This makes it possible to handle such a frame

I carry because a weight saving can be achieved, it

none is particularly advantageous when the frame I

removable. I

In one embodiment, the frame is one in I

Substantially horizontal frame. This makes a mounting I

I realized a plane on which a mast can easily be placed I

I become. I

In one embodiment, the frame is a polygo

I sew frame. This makes it easy to create a stable base

I realize for a mast. I

In one embodiment, the frame is a beamed I

I frame. H or I bars are preferably added herein

I fits, giving a favorable weight-stiffness ratio I

I can be achieved. I

In an embodiment of the polygonal frame I

I, the polygonal frame is provided with mast I at corner points

foot fasteners. This makes a sufficiently stiff I

I can make a frame in which the forces that occur occur well

I can be shared. I

In an embodiment of the mast foundation, I

I the frame is triangular. This ensures good stability I

I of the foundation with a minimum number of I

I 1 02429 8 ^ 3 anchors, while the mast foundation can be made very quickly.

In one embodiment, the mast foundation comprises anchor mounting means at each corner point of the frame. As a result, the occurring play of forces of the mast can be properly absorbed and transferred to the anchors.

In one embodiment, the anchor mounting means forms the vertices of the polygonal frame.

In a further embodiment the frame is provided with mast foot fixing means at each corner point. As a result, the forces acting on the mast can be transferred well to the anchors, and the frame deformation is thereby prevented.

In one embodiment, the anchor fastening means connect sides of the frame, for example the polygonal frame. This makes a light and simple frame with a high rigidity possible.

In one embodiment the frame is adapted to the ground surface of the mast. This allows the foundation to be easily adapted to the specific mast. Moreover, it contributes to a good conduction of occurring forces.

In an embodiment of the mast foundation according to the invention, each anchor has a fixing end, preferably a substantially pin-shaped end, for connecting the anchor to the anchor fixing means of the frame.

In one embodiment the mast foundation according to the invention comprises a plurality of anchors, inclined downwards outwards, preferably at an angle between 0 and 30 degrees. As a result, a stable foundation can be made with a minimum number of anchors. In one embodiment, the anchor mounting means define a mounting surface, and the anchors make an angle between 0 and 10 degrees with the normal of that mounting surface. In an embodiment, the angle of inclination corresponds to the conicity of the mast. As a result, forces occurring on the mast can be properly led away to the anchors.

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4 I

In an embodiment of the mast foundation I

the anchor fastening means comprise a bushing a (pin form)

mig) end of the anchor. In a further I

embodiment thereof is the inner diameter of the bushing I

5 larger than the outer diameter of the end of the I

anchor. I

In one embodiment, the mast foundation comprises I

adjusting means for horizontal positioning of the frame. I

This makes it possible to raise the mast quickly and in I

10 company. In one embodiment, the I

anchors threaded ends to which nuts are attached and I

rings, on which the frame is then placed. By I

the frame can be adjusted horizontally by adjusting the nuts

turn into. I

In an embodiment of the mast foundation I

the anchor fasteners comprise at least three l

bushes with a longitudinal axis through which ends of the I

anchors are running, with the longitudinal axes sloping towards the mast I

axis are oriented. By play between the buses and the I

The ends of the sugars may have abnormalities in the placement I

and any angle of inclination of the anchors. I

In a further embodiment, the anchor comprises I

at least one tension anchor. In one embodiment thereof I

can the anchor be screwed into the ground by screwing in I

25. In a further embodiment, the tension member comprises

a hollow tube section with on the outside thereof I

a screw blade with at least one turn and comprises the I

tube section exit openings for injecting an I

hydraulic hardener in through the screw blade at I

30 turning in the tension anchor loosened soil. An I

such an anchor is described, for example, in NL-A-I

8403178. In a further embodiment, the mast funcus comprises I

at least three anchors installed in the ground than I

tension anchors, preferably three I

35 anchors or tension anchors, in particular in the ground I

inserted at predetermined angular points of a three-l

corner. I

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5

In addition, the application relates to a method for placing a mast, in particular a mast for telecommunication, comprising the steps of: inserting at least three anchors into the ground, arranged as predetermined vertices of a triangle, wherein a mounting end remains accessible; placing a frame provided with anchor fastening means and mast foot fastening means, with the anchor fastening means positioned to be fastened to a fastening ends; connecting the anchor attachment means to the attachment ends; placing the mast with mast feet provided with foundation fastening means on the frame; connecting the foundation fastening means to the mast foot fastening means.

In this way a mast can be placed quickly, with a short lead time and lower costs.

In an embodiment of the method, anchor rods are screwed into the ground, preferably at an angle that substantially corresponds to the conicity of the mast to be placed.

In an embodiment of the method, adjusting means are provided on free ends of the anchors, whereafter the frame is placed on the ends and the frame is adjusted horizontally by means of the adjusting means.

The invention further relates to a method for temporarily placing a telecommunications mast, using a mast foundation according to the invention, wherein attachment ends of anchors or tension anchors present in the ground are released in the ground, the frame is placed and connected 35 is connected to the anchor mounting means of the frame, and the foundation mounting means of the mast feet of the mast to the mast foot mounting means.

of the frame. I

In addition, the invention relates to an I

mast, apparently suitable and intended to be mounted on a mast foundation

to place the ring according to the invention. I

The invention further relates to an I

foundation frame, apparently suitable and intended as frame I

for a mast foundation according to the invention. I

The invention is further explained with reference to I

of an exemplary embodiment of a mast foundation according to I

The invention. Herein is shown in: I

Figure 1 shows a mast with mast foot and mast fung

according to the invention; I

Figure 2 shows a plan view of a frame for I

a mast foundation according to the invention; I

Figure 3 shows the frame of Figure 2 in person

spectative view; I

Figure 4 shows a detail of the frame on an I

ground anchor; I

Figure 5 shows a cross section through the I

Detail of figure 4, I

Figure 6 shows a tension anchor for use in an I

mast foundation according to the invention.

Figure 1 shows a mast 1 for telecommunications I

purposes, on a mast foundation 5 according to the invention, I

25 and an electronics box 3 on its own frame 2 for the I

controlling the transmitting device. Mastfoot 4 is here on the I

mast foundation 5 installed. I

Figure 2 is a top view of a three-part

angular frame 5 of three H-beams 6, with at the corners I

30 7 anchor fasteners 8 and mast foot fastener I

resources 9. I

Figure 3 shows a perspective view I

of the frame 5 of figure 2 mounted on three in the I

ground anchor rods of which only the plate I

35 projecting ends 10 protrude above ground level 17. I

Figure 4 shows in detail that the

threaded end 10 of the tie rods is arranged on the I

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7 anchor fastening means 8. The wire end 10 is fastened by means of bolts 15 and 14 and by means of rings or plates 12 and 13 to a bushing 11 of the anchor fastening means 8. Holes 18 of the mast foot fastening means 9 are also shown, with which a mast foot is fastened by bolts the frame 5 can be attached.

Figure 5 shows a section through the anchor mounting means 8. The sleeve 11 of anchor mounting means 8 is hollow and has a larger inner diameter than the diameter of the wire end 10 of the anchor. As a result, deviations in the placement of the tie rods can be compensated. First worderi bolts 15 are screwed onto thread end 10 and the rings or plates 12 are fitted. The frame is then placed over the tension anchors with the bush around the wire end pin. The frame is then placed horizontally by adjusting the bolts 15, and the frame can be adjusted so that the tension anchors are positioned more or less in the middle of the bush. The remaining space of the can 11 is then filled with, for example, cement 16 or another filler. The ring or plate 13 is then fitted and the frame 5 is fixed to the tension anchors by means of the nut 14.

The sleeve 11 is positioned here at an angle a with respect to the vertical v of the horizontal plane h. In order to achieve a good foundation, the anchors are inclined with respect to the axis of the mast, with an angle that substantially corresponds to the conicity of the mast. The frame defines a plane h that is level. The mast will be erected with the mast axis perpendicular, i.e. parallel to the normal of the spirit level h. The anchors are arranged in the ground at an angle α with respect to the normal v, directed towards the mast axis, i.e. inclined downwards towards the outside, with an angle which preferably corresponds to the conicity of the mast.

Figure 1 further shows the mounting of the mast foot 4 on the frame 5, with the mast foot 4 "".

8 I

bolts 21 on the mast foot fasteners of I

frame 5 are attached. The end of the measuring foot 4 is I

by means of the bolts 21 on the mast foot mounting means 9 I

of the frame. The cables 20 are also here

5 through cable lead-throughs that lead to the electronics

ca at the top of the mast for controlling transmissions and

receive from the mast. The mutual distance of the I

anchors here is approximately 2.85 meters. I

Figure 6 shows an embodiment of the draw I

Anchors as preferably used for the mast foundation I

according to the invention. Such tension anchors 31 become the I

turned in the ground. A tension anchor that is very suitable for I

this application is described in, inter alia, Dutch I

patent application NL 84.03178, which is hereby incorporated as I

15 were it fully included in the text. Such an I

tension anchor has a central rod 35 provided with wire I

end 30 (or as described above with number 10). I

An outer casing 32 I becomes around such a tube or rod

provided with threaded connections 34 and I

20 outflow openings 33 are located between the windings. An I

such a anchor is turned into the ground and continued

concrete is penetrated through the openings through the screw

windings 34 sprayed loose ground so that pavement I

of the surrounding soil and a solid anchorage

25 ring puller occurs. I

It will be clear that the above I

description is included to illustrate the operation of preferred embodiment

to illustrate embodiments of the invention, and not to illustrate the I

limit the scope of the invention. The scope I

30 of the invention is only limited by the subject I

conclusions. Starting from the above explanation I

Many variations will be evident to a person skilled in the art. I

they fall under the spirit and scope of the subject I

invention. I

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Claims (35)

1. Mast foundation for foundation of a mast provided with a mast foot, and comprising at least one anchor arranged in the ground, a frame provided with anchor fixing means for fixing the frame to the anchor, and mast foot fixing means for fixing the frame on the mast foot. Mast foundation according to claim 1, wherein the frame is removable. Mast foundation according to claim 1 or 2, wherein the frame is an open frame. Mast foundation according to claim 1, 2 or 3, wherein frame is a substantially horizontal frame. Mast foundation according to any of the preceding claims, wherein the frame is a polygonal frame. Mast foundation according to one of the preceding claims, wherein the frame is a beam frame. Mast foundation according to claims 2-5, wherein the polygonal beam frame at corner points is provided with mast foot mounting means. Mast foundation according to one of the preceding claims, wherein the frame is triangular. Mast foundation according to any one of the preceding claims, with anchor mounting means at each corner of the frame. Claims wherein the anchor attachment means interconnect sides I of the frame. I Mast foundation as claimed in claims 3-9, wherein the anchor mounting means form the corner points of the polygonal frame. 11. Mast foundation according to claims 3-10, wherein the frame is provided with mast foot mounting means 30 at each corner point. 12 I - placing the mast with mast feet provided with foundation fastening means on the frame; Connecting the foundation fastening means to the mast foot fastening means. I 12. Mast foundation according to one of the preceding 102429 8 " 13. Mast foundation as claimed in any of the foregoing claims, wherein the frame is a polygon and the anchor fastening means form connecting means for the sides of the polygon. I Mast foundation according to one of the preceding claims, wherein the frame is adapted to the base of the mast. I Mast foundation according to any one of the preceding claims, wherein each anchor has a mounting end I for connecting the anchor to the anchor mounting means of the frame. I Mast foundation according to claim 15, wherein the mounting end is substantially pin-shaped. I Mast foundation as claimed in any of the foregoing I claims, comprising a number of anchors, inclined downwards I to the outside, preferably at an angle between 0 and 10 I degrees. I Mast foundation according to claim 17, wherein the angle of inclination of the anchors is substantially equal to the conicity of the mast. I 19. Mast foundation according to claim 17 or 18, wherein the anchor mounting means define a mounting surface I, and the anchors make an angle between 0 and 10 degrees I with the normal of that mounting surface. I Mast foundation as claimed in any of the foregoing claims, wherein the anchor mounting means comprise a bushing I for receiving an end of the anchor. I Mast foundation according to claim 20, wherein I the inner diameter of the bush is larger than the outer diameter of the end of the anchor. I 22. Mast foundation as claimed in any of the foregoing claims, wherein the mast foundation comprises adjusting means for leveling the frame horizontally. I Mast foundation as claimed in any of the foregoing claims, wherein the anchor mounting means comprise at least three bushes with a longitudinal axis through which ends of the anchors run, wherein the longitudinal axes are directed obliquely towards the mast axis, preferably with below an angle that substantially corresponds to the conicity of the mast. Mast foundation according to any one of the preceding claims, wherein the anchor comprises at least one tension anchor. 25. Mast foundation according to claim 24, wherein the tension anchor can be introduced into the ground by turning. 26. Mast foundation according to claim 25, wherein the tension anchor comprises a hollow tube section with on the outside thereof a screw blade with at least one winch and which tube section comprises exit openings for injecting a hydraulic hardening agent into the screw blade when screwing in the pull anchor loose ground. 27. Mast foundation according to claim 26, comprising at least three anchors or tension anchors arranged in the ground, preferably three anchors or tension anchors arranged in the ground, in particular introduced into the ground at predetermined angular points of a triangle. 28. Method for placing a mast, in particular a mast for telecommunication, comprising the steps of: - inserting at least three anchors into the ground, arranged as predetermined angular points of a triangle, with an attachment end accessible I stays; placing a frame provided with anchor fastening means and mast foot fastening means, with the anchor fastening means positioned to be fastened to a fastening ends; - connecting the anchor attachment means to the attachment means; 1024298 ' 29. Method as claimed in claim 28, wherein as anchor anchors tension anchors are screwed into the ground, preferably at an angle which substantially corresponds to the conicity of the mast. I 30. Method as claimed in claim 28 or 29, wherein adjusting means are provided on free ends of the anchors, whereafter the frame is placed on the ends and the frame is set horizontally by means of the adjusting means. I 31. Method for temporarily placing a telecommunications mast, using an H mast foundation according to any one of the preceding claims 1-27, wherein fixing ends of H anchors or tension anchors present in the ground are released in the mowing field, the frame is placed and connected to the anchor fixing means of the frame, and the foundation fixing means of the mast feet of the mast are connected to the mast foot fixing means of the frame. I 32. Mast, apparently suitable and intended to be placed on a mast foundation according to one of the preceding claims 1 - 25 27 I 33. Foundation frame, apparently suitable and intended as a frame for a mast foundation according to one of the preceding claims 1-27. I 34. Device comprising one or more of the characterizing measures described in the description and / or shown in the drawings. I 35. Method comprising one or more of the characterizing measures described in the description and / or shown in the drawings. -o-o-o-o-o-o-o- I PvE / MB I 1024298 ^ I