US2861332A

US2861332A - Method of tensioning guys

Info

Publication number: US2861332A
Application number: US507576A
Authority: US
Inventors: Albert P Hayden
Original assignee: United States Steel Corp
Current assignee: United States Steel Corp
Priority date: 1955-05-11
Filing date: 1955-05-11
Publication date: 1958-11-25
Anticipated expiration: 1975-11-25

Description

Albert P. Hayden, East Haven,

METHD F TENSININ G GUYSv Conn., assignor to United States Steel Corporation, a corporation of New lersey Application May 11, 1955, Serial No. 507,576, v

Claims. (Cl. 29-452) This invention relates to the connecting and tensioning of guys and more particularly to tensioning guys extending between a tower and an anchorage. The term tower is used to cover any high structure such as a power cable tower, radio `and TV towers, stacks and the like. 1t is often necessary and desirable to provide a system of guys having one end attached to the tower and the other end fastened to the ground. The guys are usually in the form of strand or wire ro-pe. It is desirable to apply a definiteA predetermined erection tension to the guys in order to limit the movement of the tower and maintain tensions within design limits. In the past erectors have estimated the tensions by observing the deflection of strands but this method is rough and inaccurate. Another method of applying the desired tension to the tower guys is shown in the patent to Howe No, 2,071,694, dated February 23, 1937. The method disclosed therein consists of casting zinc buttons on the guy, inscribing marks o-n these buttons while the guy is held in prestressing equipment at the designated erection tension and matching the marks with corresponding marks 100 inches apart on a rod. The tension is obtained at erection by taking up on the anchorage bolts until the marks 'on the strand again match the marks on the rod.

lt is an object of my invention to provide a method of connecting a guy between a tower and an anchorage and applying a predetermined tension tothe guy. V

This and other objects will be more apparent after referring to the following specication and attached drawings, in which:

Figure l is a View of a tower with an attached guy;

Figure 2 is an enlarged View showing the iinal connection of the guy to the anchor bars;

Figure 3 is an enlarged view of a socket member used in connecting a guy strand or wire rope;

Figure 4 is a view taken on the line lV-IV of Figure 3;

Figure 5 is a view showing the position of parts in an intermediate stage 'of the assembling operation, the guy being omitted for the sake of clearness;

Figure 6 is a view taken at right angles to Figure 5;

Figure 7 is a view, similar to Figure 5, showing the position of parts at a further stage of the assembling operation; and

Figure S is a View, similar to Figure 7, showing the position of the parts in the next stage of the assembly.

Referring more particularly to the drawings, reference numeral 2 indicates a tower to which guys 4 are attached in the usual manner. The other end of the guy 4 is attached to a bridge socket 6 by a zincked connection 8. For this purpose the socket is provided with a conical hole 10 through the center thereof with the large diameter of the hole being toward the ground. The socket 6 has a lirst pair of diametrically opposed holes 12 on opposite sides of the hole 10 and a second pair of diametrically opposed openings 14 arranged between said first pair of holes. Each lof the openings 14 is .slotted outwardly to the periphery of the socket 6.

be of any suitable type and are 16 are then fastened in place.

Each of the slotted openings is adapted to be covered by a strap 16 attached to the socket 6 by means of cap screws 18, The legs of a U-bolt 20 pass through the holes 12 and extend above the top of socket 6. A pair of anchor bars 22 are attached to the ground G in any `desired manner such as Iby anchoring in a cement footer 24. The anchor bars 22 have aligned holes 26 therein for receiving a threaded pin 28. A spool 30 is provided on the pin 28 between the anchor bars 22 and the lower end of the U-bolt 20 is received in the groove of the spool.

'Ihe strands 4 are shipped to the job attached to the bridge socket 6. In assembly, the bottom end of the U-bolt 2t) is passed around the spool 30 and the pin 28 inserted through the holes 26 and the bore of the spool with the spool being positioned .between the anchor bars 22. The guy strand 4 is then pulled up by block and tackle, long erection bolts or in any other desired manner until a nut 32 can be threaded on each leg of the U-bolt 20 for at least the full height of the nut. A pair of Aerection eye bolts 34 are then positioned one on each end or the pin 28 with the eyes surrounding the pin and the threaded ends in the slotted holes 14. If desired the eye bolts 34 can be used to pull up the guys until the nuts 32 can be threaded on U-bolt 20. The straps At this time the parts will be arranged as shown in Figures 5 and 6 although the nuts 32 neednot be threaded on the bolt 20 as far as shown. A center hole hydraulic ram 36 of a hydraulic jack 33 is then positioned on each erection bolt 34 with its lower end bearing against the top of socket 6. Nuts 40 are threaded down onV bolts 34 against the top of the rams, as shown in Figure 7. Hydraulic jacks 38 may connected to` a pumping unitY 42 so arranged that pressuresrare applied to both jacks simultaneously. A direct reading gauge 44 is provided in the system to indicate the load. The applied pressure expands the rams 36 driving the socket 6 downwardly to the position shown in Figure 3. The nuts 32 are then threaded down against the socket 6 and the pressure in the jacks released. If necessary, the load is again applied to move the socket 6 downwardly and the nuts 32 again threaded down against the socket 6. This operation is repeated until the gauge 44 reads the required erection tension. The jacks 38 and erection bolts 34 are then removed and washers 46 placed on the pin 28 on each side of the anchor bars 22 to ll up the space 'originally occupied by the eye bolts. Nuts 48 are threaded on the pin 28 to permanently hold the assembly in position. The guy tensions can readily be checked as desired and adjusted when required.

While one embodiment of my invention has been shown and described it will be apparent that other adaptations and modifications may be made without departing from the scope of the following claims.

I claim:

l. The method of connecting a guy between a tower and an anchor bar and applying a predetermined tension to the guy which comprises providing a bridge socket having the guy attached thereto, connecting the bridge socket to said anchor bar by means of a rst bolt extending above said bridge socket, threading a nut on said rst bolt until it bears against the upper end of the socket, passing a second bolt through a hole in said bridge socket and anchoring its lower end, placing va center hole hydraulic ram over said second bolt above the bridge socket, threading a nut on said second named bolt, applying pressure to said ram to force said bridge socket downwardly, then threading the nut downwardly on said first bolt until it bears against the upper end of the socket, then releasing the pressure on said ram, and Y removing said second bolt.

2.` The methodof v cdnri'ecting a guy between a tower and an anchor bar and applying -a predeterminedtensionY the first pair of holes and extending above said bridge' socket, threading nuts on said threaded means above said bridge socket, passing a bolt throughv each of said second pair of holes and anchoring -its lower end, placing a center hole hydraulic rain over each bolt above the bridge socket, threading a nut on each bolt against the upper end of the ram, applyingpressure to said rams to force said bridge socket downwardly, threading the nuts downwardly on said threaded means until they again bear against the upper end -of the socket', then releasingY -the pressure on said rams, and-removing said bolts.

3. The method of connecting a guy between a tower and a pair of anchor bars and applying a predetermined tension to the tower guy which comprises providing a bridge socket having the guy attached to the central part thereof, said socket having a rst pair of diametrically opposed holes on opposite sides of said guy and a Vsecond pair of diametrically opposed holes arranged between said irst pair of holes, passing the legs of a U-bolt through the rst pair oi holes, passing a pin through holes in the anchor bars with the U-bolt between the anchor bars and around the pin, threading a nut on each leg of the U- bolt, passing a bolt through each of said second pair of holes and anchoring its lower end tot said pin, placing a center hole hydraulic ram over each of the last named bolts above the bridge socket, threading a nut on each of the last named bolts against the upper end of the ram, applying pressure to said rams to force said bridge socket downwardly, threading the nuts downwardly on said U- bolt until they again bear against the upper end of the socket, then releasing the pressure on said rams and removing said bolts.

4. The method of connecting a guy between a tower and a pair of anchor bars and applying a predetermined tension-to the tower guy which comprises providing a bridge socket having the guy attached to the central part thereof, said socket having a tir'st pair of diametrically opposed holes on opposite sides of said guy and a second pair of diametricallyopposed holes arranged between said first pair of holes, lpassing the legs of a U-bolt through the irst pair of holes, passing a pin through 'f holes in the anchor bars withl the U-,bolts between the anchor bars and around the pin, threading a nut on each leg of the U-bolt against the upper end of the socket, placing an eye-bolt on the pin on the outer side of each another bar with its threaded portion extending through one of said second pair of holes, placing a center hole hydraulic ram over each eye-bolt above the bridge socket, threading a nut on each eye-bolt against the upper `end of the ram, applying pressure to said rams to force said bridge socket downwardly, then threading the nuts downwardly on said U-bo-lt until they again bear against the upper end of the socket, then releasing the pressure on said rains, and then removing said eye-bolts.

5. The method of connecting a guy between a tower and a pair of anchor bars and applying a predetermined tension to the tower guy which comprises providing a bridge socket having the guy attached to the central part thereof, said socket having a tirst pair of diametrically opposed holes on opposite sides of said guy and a second pair of diametrically opposed holes arranged between said first pair of holes, each of said second pair of holes having a slot extending outwardly to the periphery of said bridge socket, passing the legs of a U- bolt through the tirst pair of holes, passing a threaded pin through holes in the anchor bars with the U-bolts between the anchor bars and around the pin, threading a nut on each leg of the U-bolt against the upper end of the socket, placing an eye-bolt on the pin on the outer side of each anchor bar with its threaded portion extending through one of said second pair of holes, placing a center hole hydraulic ram over each eye-bolt above the bridge socket, threading a nut on each eye-bolt against the upper end of the ram, applying pressure to said rams to force said bridge socket downwardly, then threading the nuts downwardly on said U-bolt until they again bear against the upper end of the socket, then releasing the pressure on said rams, then threading the nuts downwardly on said eye-bolts yuntil they again bear against the upper end of the ram, again applying pressure to said rams and repeating said operations until a predetermined pressure is applied to said guy, then removing said eyebolts, and threading nuts on the ends of said threaded pin to hole the U-bolt and anchor bolts in place thereon.

References Cited in the le of this patent UNITED STATES PATENTS 2,071,694 Howe Feb. 23, 1937 FOREGN PATENTS 497,448 Canada Nov. 3, 1953 1,069,950 France Feb. 17, 1954 705,073 Great Britain Mar. 10, 1954 UNITED STATES PATENT QFEICE CERTIFICATE 0F CORRECTION Patent No. 2,861,332

November 25, 1958 Albert P. Hayden reby certified that error appears in the printed specification numbered patent .requiring correction and that the said Letters read as corrected below.

Ib is he of the above Patent should Column 4, line 3, for "another" read =f anchor (SEAL) Attest:

KARL He AXLINE ROBERT C. WATSON Attesting Oficer Commissioner of Patents